Calling smart contract functions using web3.js - call() vs send()

I’ve recently been doing Udacity’s Blockchain Developer Nanodegree, and the gotcha that has caused me

Solidity function visibility, explained

When writing a smart contract, we can control who/what can call functions within that contract by spe

Your first performance budget with Lighthouse

I asked on Twitter the other day how many people had created and enforced a performance budget for a

Removing duplicate objects from an Array (is hard)

Let’s say we have an array of objects such as the following:const books = [ { name: "M

Tips for making interactive elements accessible on mobile devices

The Web Content Accessibility Guidelines (WCAG) is a set a guidelines for how to make websites access

Revisiting the abbr element

A few weeks ago, I wrote about how to make the abbr element work for touchscreen, keyboard, and mouse

What self.skipWaiting() does to the service worker lifecycle

The ServiceWorker.skipWaiting() method is a life saver. It ensures that any new versions of a service

What is tree shaking and how does it work?

When Javascript applications get to a certain size, it’s helpful to separate the code into modules. H

Use the :lang pseudo-class over the lang attribute selector for language-specific styles

The content of HTML documents can be in many different languages.To specify the primary language of a

A Siri Shortcut to Generate PWA Icons and Web App Manifest

If you've been following along with my daily blogging challenge, this is my final article! I've done

Understanding the Virtual DOM

I’ve recently been writing about what exactly the DOM and the shadow DOM are and how they differ. To

My CSS Reset/Base

Since writing about the state of CSS resets in 2018, I’ve had a few people ask what my modified CSS r

Making the abbr element work for touchscreen, keyboard, and mouse

The <abbr> element is used to denote and define an acronym. For example, if we want to write th

Handling broken images with the service worker

A few years ago, I wrote about how we can use css to style broken images. The technique leveraged on

A one-line solution to highlighting search matches

I’ve recently been making some improvements to the search page of this blog, and wanted to implement

Get Ready For CSS Grid Layout - 2nd edition

In late 2015 I wrote a “brief” for A Book Apart, entitled Get Ready For CS

Announcing Smashing Print Magazine

Life at Smashing Magazine never stops throwing new surprises and challenge

Grid, content re-ordering and accessibility

I have long been concerned about the potential accessibility problems that

CSS Grid subgrid lands in Firefox Nightly

For the CSS Grid fans who have been following along, last night the subgri

A design pattern solved by subgrid

I’ve been playing with this early implementation of the subgrid feature in

Getting involved with the web platform

I spoke at An Event Apart yesterday, you can see my slides and resources h

CSS Subgrid News and demos

A couple of weeks ago I spoke at Frontend NE in Newcastle, a big part of m

Are nested grids like nested tables?

A thing I keep hearing, and especially when talking about subgrid is, “nes

Upcoming CSS Layout Workshops

I am increasingly spending my time giving CSS workshops, both in-house for

CSSconf EU, Grid Layout, and me

I don’t apply to many Call for Papers right now, because I just get so bus

Joining the React Core team in London

I’ll be joining the React team in London May 28, 2019! Writing docs, building demos, tending communit

A counterintuitive way to increase diversity in tech

Want to increase diversity in tech but frustrated at society's lack of progress? Consider a career in

2017 Reading List: sailing forward in rough waters

I read a lot of books in 2017 to help me chart a course for 2018. If you are a little like me , some

So long, farewell, Microsoft!

I've decided to move on from Microsoft's Web Platform Team. What comes next? Let's find out! But firs

Donating profits this weekend to my hometown Bookmobile

This holiday weekend all my courses are half off and the profits will bring books to people all over

Papers We Love Conf 2019

It’s Monday after flying back from St. Louis yesterday, I had jury duty, and Strange Loop ended

Using “replace” in go.mod to point to your local module

If you want to say, point to the local version of a dependency in Go rather than the one over the web

Thoughts on Emergent Strategy

I thought Emergent Strategy was a business book, or maybe a management book, likely because I saw tha

Notes from the North America GDE Summit

Over the weekend, I went to Toronto to meet with other folks from the North American region of the Go

Collaborating on live code audio using Troop

Whilst in Argentina, I asked the TOPLAP (the international organization around live coding) chat abou

I went to a hackerspace in Argentina and heard about cool art and tech things!

For the last two weeks, I was in Argentina! I did one week of workcation (working remotely whilst tra

Thoughts on Go slices and beginner’s mind

Beginner’s mind can be such a gift, if I can get over myself to enjoy it. I think some of the b

Video review: The Economics of Open Source

Published today, CJ Silverio gave a talk at the recent JSConf EU (with an amazing video turn around t

Let’s Go Video: Whats New in VS Code for Go

This week, I watched a video on VS Code, which is timely since I recently started using it. As a remi

Let’s Go Video: Observability in the Kitchen: Improve Your Breadmaking Skills w/OSS!!

For this week’s video, in honor of it being Never Graduate Week, I went hunting for a !!con vid

Listing your most used commands

A fun little command line task is to retrospectively look back at all the commands you run to which y

Blog service workers and the chicken and the egg

I posted a blog the other week explaining the process I had in place for showing recently viewed post

Moving on

Today we, my family, leave the place we've called home for just shy of 10 years. We're moving house -

head is locked

Yesterday I posted a little historical insight into why the closing </p> tag is optional, but i

(Why) Some HTML is "optional"

Chris Coyier blogged recently on weird looking HTML. It's a nice short post and I'd say it's worth kn

Blocks of Tetris code

In one of my Twitch hour sessions I decided to attempt to build a Tetris clone inspired by news that

Offline listings

The other week I finally pushed full offline access to my blog. I'd taken a lot of inspiration from J

Transforming text

During the weekend I spent an hour coding a hacky bit of code and I thought it might help one or two

The ninth August

August comes around in a flash. The living of life keeps me busy throughout the year. Work during the

Build free code & testing ES module imports

A bit of a mouthful of a post title, but I can assure my future self this post will be worthy of publ

An fd trick

If you followed my CLI improved then you'll know I'm a fan of the fd command which I'm able to use fo

Redux: Lazy loading youtube embeds

There's a great pragmatic post on dev.to (that Jeremy's link feed put me on to) on how best to embed

Predictably Random

The concept of random is pretty interesting when you think about it from a computer's point of view,

Ninja

This is my personal blog and sometimes I'll publish very personal things. It's cathartic for me, but

Buy the coffee

Having been asked my advice on starting a company (usually of one), my advice tends to start with: bu

User agent tunnel vision

Yesterday I published a post that I'd been writing for a while as I considered and compared three web

Progressive Enhancement

This post was originally written in 2015, but upon re-reading it today, it still (just about) holds u

Analytics, logs and metrics

Netlify just recently launched a simple analytics offering for $9 per site per month. It's a great ad

Elsewhere 2019 w28

A few interesting links I came across this week.Ethical Web PrinciplesFound on July 12, 2019 at 17:01

A thought: Privacy Pollution

This post is very much a stream of thought from a small handful of conversations and triggered by a t

Scheduled and draft 11ty posts

This post explains how you can add scheduled publishing to your 11ty blog (with a bonus for drafts).B

Send Outgoing Webmentions

In a recent Twitch session I decided to add Webmentions to my blog, specifically in the flavour of sh

Reduce spread and the path to unique

As modern JavaScript language features land more and more support I find myself using more and more o

Ejecting Disqus

Running a routing performance check on my blog I noticed that in the list of domains being accessed i

Slide Show Karaoke

During a jsconf.eu break as I attempted to lighten Katie Fenn of her npm stickers, I was unwittingly

Firebase + Lambda + Zeit now

Super niché I know. I've been playing with Zeit's v2 now platform, and in particular I wanted to acce

All I want for Christmas is…

…my two front teeth. A song, that for reasons beyond my comprehension, went around my childhood house

Compiling binaries for Netlify

There's the odd occasion that inside of a Netlify build (or maybe a lambda function) that I've wanted

How I got AWS running inside Netlify

In a recent attempt to move away from Google analytics I wanted to be able to run the AWS command lin

Bare Import Cost

This post is about import in JavaScript. This post, I'm afraid doesn't have any grand solutions or ev

Search & dynamic shortcut links for a static site

In porting my blog from Heroku to Netlify there were a few dynamic aspects that I had to reconsider i

All your envs in a row 🦆🦆🦆

If you've used Zeit's Now platform you'll know to get your environment values readable by your code,

How to put your kid in Scratch

I was asked by a few parent friends how I put my kid in Scratch, so here's my guide to how to put (an

Code highlighting: server or client?

Recently I posted a quick poll to Twitter asking:Do you think syntax highlighting (in blog posts, exa

How I failed the

A real bug bear of mine is when JavaScript gets in the way of browsing a page on the web. Simple, but

Twitter without tracking

Recently I've been using the DuckDuckGo browser extension that gives me a web site privacy score but

Slashed URI

Trailing slashes in URIs, or URLs or UDI (surprisingly). What the heck do they actually mean, do they

#Web30

This week marks the 30th birthday of the web. I've had my own involvement in this momentous date in h

Excavating a user agent

Warning: this is a tale of geek's own adventure into the dark depths of old webby stuff that really d

WWW: Where's the Writable Web?

This post is based on my experience and thoughts, and is not backed up by research, aka: speculative,

CERN day 5: the end

What a packed week, what an honour and privilege to be part of, and what a superb job we did.It's all

CERN day 4

Another long day from 9am to 10pm coding, conferring, braining, hacking and edging towards our goal:

CERN day 3

The day's work has really started to intensify, particularly as the pressure mounts (certainly in my

CERN day 2

Though my body clock says it 7:30pm it feels like it's midnight—it's been a long, busy, interesting a

CERN day 1

This marks the beginning of a week long adventure in Geneva Switzerland at CERN, to work on a hack pr

Should I add another dependency?

This is, by far, not the first post on this topic, but it's something that I've considered for years

A Toe in TypeScript

I was watching a short video recently where the author was using TypeScript, except the only TS'ing t

Books I read in 2018

In 2018 I read 37 (or so) books. Some of which were graphic novels which arguably I wouldn't include

Books I read in 2017

I starting reading "properly" at the end of 2016 and carried on into 2017. At this stage, I

My 2018

With the 12 year of this blog's existence, I present to future me: stuff that happened in 2018 that 2

One way you could implement this is to have an intent dedicated to receiving the French words and…

One way you could implement this is to have an intent dedicated to receiving the French words and hav

What device are you trying to connect to?

What device are you trying to connect to?

I’m afraid there is no option to wait for an infinite period.

I’m afraid there is no option to wait for an infinite period. Both Dialogflow and Assistant will time

I’m joining Microsoft

For the love of the open source communityhttps://twitter.com/jeffsand/status/913915537742233600Hello

Hi, in order to send the order via email, you will need to have a server to do it.

Hi, in order to send the order via email, you will need to have a server to do it. For that, you will

Sorry to hear that. Please read the disclaimer at the top of the article.

Sorry to hear that. Please read the disclaimer at the top of the article.

You mean the seventh!?

You mean the seventh!?PS: could you also please use our official press kit for the logo? The logo you

AngularJS is in LTS untill June 30th, 2021.

AngularJS is in LTS untill June 30th, 2021.

Beautifully summarized! Thank you Jeremy S. Cook

Beautifully summarized! Thank you Jeremy S. Cook

Awesome! Don't forget to use the discount code rffr1 when buying the desk ;)

Awesome! Don't forget to use the discount code rffr1 when buying the desk ;)Oh! And by the way, y

Google Cloud Functions and Serverless Path Parameters

I’m trying to transition an express node service to using the serverless framework and Google C

Worlds Fastest Store, well sort of

I have been working on building a PWA front end for WooCommerce.  I saw the Polymer Shop repository a

Things you should do in Barcelona

Beer:Garage Beer Company – Brew pubBierCab – Bar and beer store.  Amazing selection in bo

Coding Style Guides

If you know me you probably know that I sincerely believe that for a project to be successful you nee

Making Coffee and Web Apps

I drink a lot of coffee. I write a lot of JavaScript.  This is about my journey from drip to my perfe

Reading local files with JavaScript

JavaScript does not have direct access to the local files due to security and privacy.We can offer th

A look at how I build stuff

The process is similar to how I do side projects in general.

My Google I/O 2019 wrap-up

One part of this was to give two presentations:Google Search: state of the union together with John -

SEO codelabs for developers

We came up with two com

Google I/O - let's meet!

On Tuesday I will most likely hang around the community lounge and the web sandbox :)

2018: a retrospective

I contemplated we'd see more progress for WebXR, which is the case. The TPAC meeting had a whole

A new adventure

I started in April and had a great time during "Noogler onboarding" where I was introduced

Writing an x86 "Hello world" bootloader with assembly

After booting, the BIOS of the computer reads 512 bytes from the boot devices and, if it detects a tw

Firefox day 5: A race

I've opened a session with four tabs:FacebookTwitterA Stackoverflow threadA Github pageAn Archilo

Firefox day 4: Goin' up the country

I've found a few niceties besides the fact that apps open links with Firefox in the background an

Firefox day 3: Details

When switching browsers three days ago, I forgot to install an ad blocker.I have to say I'm surpr

Firefox day 2: First few cracks

Today I happened to visit my own website, geekonaut.de and noticed a few interesting glitches on my p

My Firefox month: Day 1

I will try Firefox 54 on my laptops and phone for a monthFirefox Sync provides me with seamless acces

How I approach side projects

Start with something you don't know. Research & write down the resultResearch just enough to

CORS - a guided tour

The browser enforces the Same-origin policy to avoid getting responses from websites that do not shar

Bits and bytes in JavaScript

when dealing with binary data or communicating with hardware, you may find yourself needing ways to m

JavaScript in parallel

JavaScript is single-threaded and long-running scripts make the page unresponsiveWeb Workers allow ru

Understanding different number systems

The fact that we use a number system with 10 symbols (0-9),aka "Base 10" or decimal is an a

2016: The year in review

This year I finally finished the draft of my book on Polymer!If things work out, it will be in print

HTML, DOM and JavaScript unraveled

The web platform has started out with HTML to allow users to share documentsand link them in a user f

The overwhelming web

Web Development can be pretty strange these days.On the one hand we tell beginners that they need ALL

Slick and slf4j MDC logging in Scala

Multi-user applications need log messages to retain context, so the situation can be examined on a tr

Five rules to stay sane and efficient when handling downtimes

Downtimes, Crashes, Incidents, System Failures - they have many names, but most people involved with

Five rules to stay levelheaded and efficient when handling downtimes

Downtimes, Crashes, Incidents, System Failures - they have many names, but most people involved with

JSON RPC 2.0 - for simple and powerful APIs

To my surprise a contender in the field of API protocols is yet unknown: JSON-RPC 2.0.A standard sinc

What is new in Java 12 (for Developers)

Java JDK 12 was released on March 19 as part of the new release cicle (a new Java version every 6 mon

Setting up MySQL on Oracle Cloud + Connecting with MySQL Workbench

In this article we will learn step by step how to setup a MySQL instance on Oracle Cloud. MySQL is th

CRUD REST API Using Spring Boot 2, Hibernate, JPA, and MySQL

In this article we will learn how to develop a CRUD RESTFul API with Spring Boot 2 + JPA/Hibernate an

Deploying a Spring Boot REST Application to Oracle Cloud

In this article we will learn how to develop a simple Java Spring Boot 2 REST application and deploy

Upgrading to Angular v6: Step by Step

Angular v6 was released on May 3rd and now we can focus on upgrading our projects to the new version.

Continuous Integration with Angular CLI + Travis CI + Firebase Hosting + Greenkeeper + Github

In this article we will learn how to automatically deploy an Angular CLI project to Firebase hosting

Angular Tips: Formatting Dates with a Custom Date Pipe (dd/MM/yyyy)

In this article we will learn how to create a custom Date Pipe with Angular. Using Angular default

How to Add Bootstrap to an Angular CLI project

In this article we will learn how to setup an Angular project with Bootstrap 3 or Bootstrap 4. Update

Angular: Hide Navbar Menu from Login page

In this article we will learn two approaches to hide the Navbar Menu when displaying the Login page i

Angular Reactive Forms: trigger validation on submit

In this article we will learn different approaches of validating all form fields when user clicks on

Angular Tips: Avoiding duplication of RxJS operator imports

Updated post Update May 2018: since Angular v5, we can use RxJS Pipeable Operators, which makes easie

Getting Started with Angular Material 2

This article will show you how to setup your Angular project (v2+) using Angular Material 2. Update D

O que uso pra gravar os screencasts - 2016

Olá pessoal, De vez em quando as pessoas perguntam o que uso pra gravar as aulas que disponibilizo no

Todos os ebooks da Packt por US$ 5 - inclusive os meus!

Olá pessoal, Vim compartilhar uma super dica com vocês. Tem uns 3 anos que a Packt (editora com a qua

Meus ebooks Sencha e JavaScript com 50% de desconto!

Olá pessoal, A Packt entrou em contato e está oferecendo 50% de desconto nos meus livros no formato e

40+ resources to learn Sencha ExtJS 6

This is a list of 40+ resources to learn Sencha ExtJS 6. It contains presentations, tutorials, exampl

[Curso Java Básico - Orientação a Objetos] Correção Exercícios Aula 27: Classes e métodos

Oi pessoal, Hoje vamos conferir a correção dos exercícios de laboratório da aula 27 do Curso de Java

[Curso Java Básico - Orientação a Objetos] Aula 27: Classes e métodos com parâmetros

Olá pessoal, Vídeo/Screencast de hoje: aula 27 do curso gratuito de Java! Na aula de hoje vamos apren

Packt Free Learning: 1 ebook gratuito todos os dias (pra sempre)!

Oi pessoal, A Packt (editora pela qual publico meus livros) de vez em quando lança campanhas de 1 eb

[Curso Java Básico - Orientação a Objetos] Aula 26: Classes e métodos com retorno

Olá pessoal, Vídeo/Screencast de hoje: aula 26 do curso gratuito de Java! Na aula de hoje vamos apren

[Curso Java Básico - Orientação a Objetos] Aula 25: Classes e métodos simples

Olá pessoal, Vídeo/Screencast de hoje: aula 25 curso gratuito de Java! Na aula de hoje vamos aprender

[Curso Phonegap / Cordova] Aula 07: Phonegap + Android no Windows: Configurando Ambiente

Olá pessoal, Vídeo/Screencast de hoje: aula 07do curso gratuito de Phonegap e Cordova. Na aula de hoj

[Curso Java Básico - Orientação a Objetos] Correção Exercícios Aula 24: Classes e atributos

Oi pessoal,Hoje vamos conferir a correção dos exercícios de laboratório da aula 24 do Curso de Java g

[Curso Java Básico - Orientação a Objetos] Aula 24: Classes e atributos

Olá pessoal, Vídeo/Screencast de hoje: aula 24 do curso gratuito de Java! Na aula de hoje vamos apren

[Mobile Conf 2015] Palestra e Curso Phonegap com Ionic no Rio de Janeiro dias 28, 29 e 30 de Maio

Olá pessoal, Dias 28 e 29 de maio estarei no Rio de Janeiro para ministrar 2 workshops de Phonegap/Co

[Curso Java Básico] Aula 23: Como debugar no Netbeans

Olá pessoal, Vídeo/Screencast de hoje: aula 23 do curso gratuito de Java! Na aula de hoje vamos apren

[Curso Java Básico] Aula 22: Como debugar no Eclipse

Olá pessoal, Vídeo/Screencast de hoje: aula 22 do curso gratuito de Java! Na aula de hoje vamos apren

[Curso Java Básico] Aula 21: For Each (for melhorado)

Olá pessoal, Vídeo/Screencast de hoje: aula 21 do curso gratuito de Java! Na aula de hoje vamos apren

[Curso Java Básico] Correção Exercícios Aula 20 (Matrizes/Arrays Multidimensionais)

Oi pessoal, Hoje vamos conferir a correção dos exercícios de laboratório da aula 20 do Curso de Java

Congresso TI 2015: Palestra Online e Gratuita sobre Phonegap para iniciantes

Olá pessoal, Vim aqui falar para vocês que essa semana começa o a segunda edição do Congresso TI. O e

How not to sort an array in JavaScript

Array sorting is one of those things you don’t spend too long thinking about, until it stops working

How to start a Node.js project

Sometimes I write blog posts to remind myself what I’ve learned and sometimes I write them because so

2018 in review

I’ve never been one for writing a review of my year. This year I’ve found myself not only reading, bu

Service workers: beware Safari's range request

You’ve implemented a service worker to cache some assets. Everything is working well, your service wo

Techniques for animating on the canvas in React

I recently experimented with audio visualisation in React on the Twilio blog. While I meant to teach

Implementing one time passwords in Crystal

Crystal is still a young language, there aren’t a lot of libraries available yet. For some this could

Git commands to keep a fork up to date

I’ve seen the following tweet about git making its way around Twitter recently:I ❤️ Git. But honestly

Spring clean your dev machine

Development machines can build up such a lot of cruft. Old versions, oudated programs and unused cach

Use the web share API easily with web components

I’m a fan of the web share API but I was not happy with my initial implementation of the API. It was

CSS: select first-of-class with the subsequent sibling combinator

There are a whole bunch of CSS selectors available to web developers, but sometimes there’s still not

A 10-minute primer to Service Workers

In this article, we have a look at what service workers are, why they are used in modern web developm

How to update an existing project in your Nx workspace to use Jest as a test runner instead of Karma

Nx v6.3 introduced the ability to use Jest as a unit test runner. When you generate a new library or

How to use environment variables to configure your Angular application without a rebuild

In February 2016, I published an article on how to configure your AngularJS 1.x application using env

The 7-step process of Angular router navigation

There are many great articles and books available on how to use and configure Angular router. In cont

A 10 minute primer to JavaScript modules, module formats, module loaders and module bundlers

Modern JavaScript development can be overwhelming.When working on a project, you may wonder why all t

Review of Angular 2 Master Class by Thoughtram

On July 6 and July 7, 2016 I attended the Angular 2 Master Class by Thoughtram in the Showpad offices

Review of Angular 2 Workshop by Brecht Billiet

On June 29 and June 30, 2016 I attended Brecht Billiet's Angular 2 Workshop at Holiday Inn Ghent Expo

Simple metaphor to easily understand and remember how token-based authentication works

In this modern era, software is often using token-based authentication so that parts of the software

How I feel about Angular 2

A few weeks ago I was privileged to spend time with Pascal Precht while he was preparing his talk for

How to configure your AngularJS application using environment variables

Most AngularJS applications contain logic.And thus most AngularJS applications typically have a confi

How to properly integrate non-AngularJS libraries in your AngularJS application

There may be times when you need to use a non-AngularJS library such as lodash or underscore in your

How I optimized Minesweeper using Angular 2 and Immutable.js to make it insanely fast

In my previous article I showed you how to build Minesweeper using Angular 2 and Immutable.js. You ca

How to build Minesweeper using Angular 2 and Immutable.js

This is the first in a series of articles on Angular 2. If you want me to send you a quick note when

Thoughtram Angular Master Class review

On August 25th and 26th I attended the 2-day Angular Master Class by thoughtram at Silversquare Bruss

How to use areas and border states to control access inside an Angular application with ui-router

UI-router is awesome!You can create nested states and do all kinds of fancy stuff.But what if you nee

Manually Lazy Load an Angular Module with ViewEngine and Ivy

I have written about lazy loading components in the past, that covers some of the topics mentione

Debugging Angular Ivy Applications from the Devtools Console

Do you remember how in AngularJS (v1.x) we could easily debug/change the state of our components

Resume your Work with Git

Git is an essential tool for every software developer and something you should know well in order

Angular Performance: Precaching with the Service Worker

This article is part of my “Angular Performance Week” series, where I publish a new v

Angular Performance: Virtual Scrolling with the CDK

This article is part of my “Angular Performance Week” series, where I publish a new v

Angular Performance: Optimize Angular Change Detection

This article is part of my “Angular Performance Week” series, where I publish a new v

Angular Performance: Performance budgets with the Angular CLI

This article is part of my “Angular Performance Week” series, where I publish a new v

Angular Performance: Preloading Lazy Routes

This article is part of my “Angular Performance Week” series, where I publish a new v

Angular Performance: Route Level Code Splitting

This article is part of my “Angular Performance Week” series, where I publish a new v

Dynamically Load CSS with the Angular CLI

I’ve written about lazy loading in the past, as well as how to handle various styling issues in A

It’s time to say thank you to the Angular CLI Team!

Nowadays, you can create, and run a new Angular project in minutes (!! 🔥). It really just depends

Publish a Docker container from Bitbucket to Google Cloud Container Registry

Automation is key, I cannot repeat that often enough. In this article we’re going to explor

Challenging the Testing Pyramid

Writing automated tests has become like a standard practice in software development and (should b

Update to Angular Version 8 now!

Let’s dive into the latest Angular version 8 that just got released. We’ll quickly ex

Create Code Snippets for Visual Studio Code with ease

When writing software, even when writing a blog post using Markdown, there are some pieces you ha

Angular 8 and the Future - NGConf 2019 Roundup

I’m not at NGConf 2019 (unfortunately). But I’m following along very closely with the

Lazy load Angular Components

Lazy loading is hot recently and for a good reason. It’s all about speed! The Chrome team at Go

Introduction to Angular Elements

You didn’t yet get into Angular Elements? Then it’s time to give it a go! In this art

Setup your Workstation for JavaScript Development

You want to learn about modern web development with JavaScript? Maybe Angular? Well, then it&rsqu

Productive Git for Developers

With this Egghead course, I aim at a different goal. You will walk through a series of scenarios

RxJS finalize operator to execute logic on Observable termination

In this article we’re going to have a look at the RxJS finalize operator. To have a practic

A step-by-step guide to integrating a third party widget with Angular

When working on a complex project you will inevitably face the situation when you have to use a 3rd p

Display Server Side Validation Errors with Angular

Input Validation is a big topic when it comes to forms. And even more in those large, enterprisey

Explore Angular Router's runGuardsAndResolvers

Learn how we can use new options introduced for the runGuardsAndResolvers setting for the Angular

Guarantee Event Order with RxJS

When you create dynamic UIs, you have to deal with async stuff a lot. Most often they are triggered

It's not just Standing Up

I’m highly convinced that the hardest part of software development is people. Here are some

Learn Angular Router for Real-World Applications

Finally, it's out!!! My Angular router course is now available on Egghead, go grab it :)

Better Redirects in Angular Route Guards

Angular version 7.1 not only comes with bugfixes but includes also a bunch of new features. In this p

Egghead Lesson: Simple caching with RxJS

This is the accompanying article for my latest Egghead video lesson on caching data in Angular by lev

Egghead Lesson: Avoid memory leaks when subscribing to RxJS Observables in Angular Components

RxJS is a first class citizen in every Angular application. It's extremely powerful, but there are al

Simple State Management with RxJS’s scan operator

State management is a big topic currently in frontend development. For a reason: frontend frameworks/

My Journey replacing Promises with RxJS

In this post I’m going to tell you, step-by-step, how I used RxJS to refactor a method that was based

[object ErrorEvent] thrown by Karma in Angular Unit Tests

I’m pretty sure when you’ve already come across this exception: `[object ErrorEvent] thrown` when you

In-depth: How do CDK Portals work?

In the last article we were exploring how to leverage the Angular Material CDK portals for placing so

Dynamic UI with CDK TemplatePortal and DomPortalHost

Ever wanted to place some piece of UI dynamically from one component to another? But the component th

Extend the *ngIf Syntax to Create a Custom Permission Directive

So our use case is to create a directive, which shows/hides elements on the page based on our current

Add Mocha reporter for Karma unit tests to your Angular CLI project

Every Angular CLI generated project comes already with a test setup in place using Karma. I think the

Create a CD pipeline with Angular, GitLab and Firebase

I’m a huge fan of automating all the stuff. Even if you’re a very precise and organized person, you’r

Create a ng-true-value & ng-false-value directive for Angular

If you come from AngularJS (v1.x) I'm pretty sure you remember the `ng-true-value` and `ng-false-valu

Compile-time vs. Runtime configuration of your Angular App

When you develop a bigger application, chances are quite high that you need some kind of configuratio

Looking back on 2017

2017 has been a great year, lots of changes for me and new things 😅. Time for some retrospective. (Wa

Three new Angular Courses to celebrate end of the Year 2017

2017 has been AMAAAAZING (more in a later post..maybe). So before the year ends let's celebrate it wi

Use Dynamic Components to render HTML for 3rd party libraries

Dynamic components in Angular are very powerful and help you solve the trickiest problems. In this ex

Demystifying dynamic Forms in Angular

Heared about reactive Angular forms? Maybe even about dynamic forms? Never tried because you think it

Understand How to Style Angular Components

Here it is!!! 🔥 🔥 🔥 My very first Egghead.io course 😃. Learn everything you need to know about stylin

Intercept HTTP Requests in Angular

Angular version 4.3.1 introduced one important new feature: the new HTTP client. Not only did it brin

Create a dynamic tab component with Angular

The purpose of this article is to learn about the concept of dynamic components and template referenc

Enhanced *ngIf and *ngFor in Angular version 4.0.0

Ever wanted an "else" statement in *ngIf? It's finally here, together with some other nice improvemen

Talks: Web meets Mobile powered by Angular

I had the pleasure to bring 3 amazing speakers on board for our Software Craftsmanship South Tyrol Me

Tuning Angular's Change Detection

I recently prepared some course material for a modern web development workshop, which besides the nic

Angular Modules vs ES6 Modules

I often see people being confused when it comes to understanding Angular Modules vs. ES6 Modules. Thi

Ted Talk: The Puzzle of Motivation

Nice talk about how many businesses get motivation wrong.Key points Those 20th century rewards, thos

Video Course: Learning Angular Components

I just released the 2nd edition of my video course for PacktPub on "Learning Angular components". Co

Talk: Testing with Angular - Some Recipes

I recently wanted to dive deeper into testing Angular applications, in specific on how to write prope

Easy SSL support for your Jekyll Blog with CloudFlare

It's 2017 and if you didn't switch to a secure SSL connection yet, it's definitely time to do so. Thi

NG-BE Conf and the Angular Community

I was lucky enough to be part of the Belgium's first Angular conference: NG-BE conf. It was by far th

Interviewing Igor Minar and Adam Bradley for AngularBeers

For the last meetup of 2016, AngularBeers organized an AMA session with Igor Minar (lead dev of Angul

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Configure Ahead of Time (AoT) for your Angular app using the Angular CLI

In our previous video we learned how to use the Angular CLI to create our first Angular application.

Safe Navigation Operator, RxJS and Async Pipe tinkering

RxJS? Safe Navigation operator? Async pipes? Not sure what I'm talking about? In this article I'd lik

Custom validators in template driven Angular forms

Angular version 2+ has two different kind of Forms API, the reactive and template driven approach. In

Data bind radio button lists with Angular

Assume you have a simple list or table of elements, each row having a radio button. The user can sele

Configure a proxy for your API calls with Angular CLI

In this article (video included!) we will learn how to setup your Angular development server and how

Let's create your first Angular app

Angular got released and so it's the perfect time to try it out. I totally understand it might be dif

Angular: Using the JSONPipe for debugging

A powerful way of debugging, especially templates, in Angular 1 was the JSON pipe (or filter) which c

Angular: How do I get a reference to the window object?

Remember the $window object in Angular 1? Turned out to be quite useful from now and then. But what a

Angular: How do I register an event listener on document?

I recently got asked by an Angular community member on Twitter how one can register an event on the d

Angular version 2.0.0 released!!

It was at the ng-Europe, on the 22-23 September 2014 when the Angular team came with a huge surprise:

Angular Forms - a first look

Angular gets a brand new Forms API. It's fresh out of the compiler and since there's not much documen

RxJS first steps - Subject and ReplaySubject

I'm not sure you already heard about RxJS or Reactive Programming in general. There's currently a ver

From ng-controller to components with Angular 1.5

The web has moved forward and so should you. Learn how to upgrade your Angular 1 app from a more MV*

Angular 2+ - A Getting Started Guide for Beginners

Since about half a year, I'm organizing a local Meetup group around Software Craftsmanship. I recentl

Learning Angular 2 Directives

Finally 😆, I managed to finish and publish my very first video course: "Learning Angular 2 Directives

Fine grained change detection with Angular

Today, while working on my Angular screencast series (announcement coming soon), I discovered a stran

Debugging Angular Applications from the Console

There have been some quite useful articles for how to debug Angular 1.x applications from the browser

Learning Angular: Creating a tabs component

This is a follow-up article of thoughtram's excellent article on developing a tabs component with Ang

Learning Angular: Conditionally add styles to an element

Here we're going through a couple of ways to conditionally apply some styles to a DOM element in Angu

About Personal Productivity

Thinking aloud about productivity, what I'm currently doing about it and where I think I need to impr

Multi Content Projection aka Multiple Transclusion

(adsbygoogle = window.adsbygoogle || []).push({}); If you’re an AngularJS developer, I’m

Upgrading Angular from 1.x

Yesterday the Angular team released Angular 2 in beta. With that, they also added an interesting step

Improve your Angular 1.x startup time

(adsbygoogle = window.adsbygoogle || []).push({}); This neat and simple trick originally appeared ab

Componentizing Workflow for Angular

(adsbygoogle = window.adsbygoogle || []).push({}); $1 Yesterday I wrote a tweet about how I usually

Follow-up: EvolvingPublication

Martin Fowler just published a "Bliki" article on his site about EvolvingPublication. This is a conce

GitLab Flow

I’ve already published a couple of Git guides on my blog here Git Explained: For Beginners Impl

Egghead.io - Getting started with Redux

Dan Abramov, creator of Redux has published 30 video lessions on Egghead.io explaining Redux.

Role of an Enterprise Architect in a Lean Organization

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Good Tech Lead, Bad Tech Lead

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Exploring Components in Angular 1.5

Todd Motto introduces the .component() function that will be out in Angular 1.5. This is a further st

How to be agile in a non-agile environment

Good article from the Gov.uk Government Digital Service blog. How to be agile in a non-agile envi

REST Api Design - Resource Modeling

Important note: this is not something I've written up by myself, but it's rather a summary, some high

Screencast: TypeScript - Setup Your Working Environment

(adsbygoogle = window.adsbygoogle || []).push({}); First of all, this is my first screencast ever, s

Use ngModelOptions to limit digest cycles

Some good hints on how to speed up your Angular app by limiting digest cycles.

Angular Connect London - Day 2

I’m lucky enough to be able to attend AngularConnect here in London. This article is my noteboo

Angular Connect London - Day 1

I’m lucky enough to be able to attend AngularConnect here in London. This article is going to b

Breaking apart conceptions by Ayende Rahien

Cool guy talking about the cost of abstractions and why you should often step out and critically look

Release your libs like a pro!

Automate, automate, automate. That's what ultimately is our job, right? We automate the tedious proce

10 Interview Questions Every JavaScript Developer Should Know

Good article, definitely worth reading. Here are the questions: Can you name two programming paradigm

El Capitain Broke My Developer Stuff! Here's How to Fix It

El Capitan might have messed up with your developer tools. This article shows how to fix it again.

On Monoliths and Microservices

Have cross-functional teams vertical decomposition: create vertical slices, being as independent from

Building an Enterprise CSS Framework

I’ve already had a couple of times the chance to work on a common style guide for our enterpris

12 Rules for Professional JavaScript in 2015

Some good tips you should already be following if you want to code JavaScript as a professional.

ES6 Features

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Small useful lib by Shai Reznik (@shai_reznik) that aims at helping you to test your Angular apps.

$q.defer: You're doing it wrong

Nice article on Angular deferreds, promises and things you may do wrong. use $q.when(['detail', 'simp

Angular 2 survey results

Jeff Whelpley presents the results of a survey he conducted on Angular 2 among Angular developers. So

What forces layout/reflow

Googler and web development expert Paul Irish published a nice list of JavaScript functions which tri

Are you making these 10 Unit Testing mistakes?

Interesting article that lists 10 very common mistakes I encountered (and made) myself. Check it out.

GitHub: Scaling on Ruby, with a nomadic tech team

Cool article on GitHub’s tooling and infrastructure. It’s not shipped until it’s fast

ES2015 - Jump Start

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Why We Should Stop Using Bower – And How to Do It

Ya…those package managers. Lot of people suggesting to move away. I like NPM, or even JSPM, bu

Why You Should Avoid a Canonical Data Model

Stefan Tilkov writes about why canonical data models can be a bad thing. Totally agree as I’ve

Angular 1 and Angular 2 integration: the path to seamless upgrade

Since when the Angular team at Google announced the release of Angular 2, a total rewrite of Angular

Ultimate AngularJS and Ionic performance cheat sheet

Interesting article that lists many performance tips and tricks for Angular v1.x. $watch one-time bin

Building a desktop application with Electron

Really cool article that does a step by step intro about how to build a desktop application with Elec

Host and Visibility in Angular 2's Dependency Injection

@PascalPrecht dives into the details of Angular 2’s dependency injection. Angular 2’s DI

semantic-release - @kentcdodds talks to @boennemann

Kent C. Dodds talks with Stephan Bönnemann, the creator of semantic-release. Semantic-release automat

Preparing for Angular 2

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Learning Angular: Testing $q promise resolves with Sinon and Jasmine

(adsbygoogle = window.adsbygoogle || []).push({}); This article shows a brief example on how to prop

Learning Angular: Expose an API on your directives

Ever wanted to not only create a nice, visually appealing directive or web component, but to also pro

Guide as in Mountaineering

Yes, I happen to deal with architecture, software design and technology. And yes, I’m entitled

GitHub: be Social, Contribute, Learn

GitHub revolutionised the open source world by building - IMHO - the first true social coding site. I

Jersey WebResource - Header don't get appended

Yesterday I ran into a strange problem when using the Jersey WebResource class for doing HTTP calls:

Nepal: Help for Anil Joshi

This is not the kind of post you usually find on my site here. But it’s the story of a good fri

Migrate from TFS to Git

Are you using TFS and would like to switch to a distributed VCS like Git? Well then this article migh

Learning Angular: Set your language culture before any UI is displayed

In this article I briefly outline an issue I had, namely to make sure that my language’s locale

Learning Angular: Verifying whether a function has been passed to my directive's isolated scope

When you create isolated directives, you usually use the scope property to define your directive's ex

Learning Angular: Access directive scope variables from directive controllers and vice versa

Angular directives can have a separate, isolated scope, which is even the suggested approach most of

Backup your Win8 computer to your Synology NAS

I love my Macbook Pro which I’ve been using now for about 6 years. At work I’m a PC user

Notes: Microservices by Martin Fowler

I just watched Martin Fowler’s talk about Microservices at XConf. Here are some of my notes and

Happy new year 2015!

A very short post as I’m preparing to go out for celebrating New Year’s Eve. 2014 has bee

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I don’t quite remember, guess it was about more than a year ago when I came across a Svbtle-hos

Learning Angular: Useful utility functions

Today a very short post. Angular has a series of utility functions which you should definitely take a

Learning Angular: Unit Testing $watch expressions

Today I wanted to write a unit test for a watch expression on my controller. What seemed quite obviou

JavaScript Promises Essentials

JavaScript is asynchronous by definition which is what makes many server-side developers struggle ini

Learning Angular: What is the scope of your directive??

This might create quite some debugging headaches, especially in a larger application. Things don&rsqu

Learning Angular: Gosh, my two-way binding doesn't seem to work properly!

Angular data-binding seems magic, but obviously isn't. You have to give it a chance to do its work. A

Sublime Tip: Enable spell checking when you write Markdown

This is a huge lifesaver and I don't know how I couldn't come up with this before. Check out this pos

Introducing the learning-ng series

With this post I’d like to introduce to you the - what I’d like to call - learning-ng ser

Avoid test code duplication in Jasmine tests

Test code has to be treated like production code. Obviously we cannot charge the customer for it, it&

Want to invite your friend to Inbox by Gmail but have no invites left?

Slightly off-topic, but that might still awake your interest if you recently followed the hype around

Static code analysis for free

Although JavaScript might be the world’s most misunderstood language, it is now among the most popula

Hack: How to mimic a disabled checkbox

The world is not always as we want it to be :). So from now and then you have to place a nice hack he

Implementing the 'Git flow'

Git can be used in a variety of ways which is cool. But still, when working within a team, it is good

Node, Grunt, Bower and Yeoman - A Modern web dev's Toolkit

This article aims at introducing you to some of the currently most popular tools when developing mode

Lazy Angular Modules

Startup time is crucial for a proper user experience and that’s where many JavaScript SPA reall

First baby steps with Angular.js

This article outlines some of my notes of a webinar about Angular.js I recently participated at. Thes

See, always told you: testing is just a waste of time

Automated testing has become something people don’t speak about any more. It matured to being a

QCon London 2014 - Embracing Change - Building Adaptable Software with Events

Building adaptable software is what we continuously aim at achieving during our day to day work. Howe

Integrating Node.js with a C# dll

Recently I had to integrate a Node.js based server application with a C# DLL. Our software (a web-app

Packt Video: JBoss EAP Configuration, Deployment and Administration

Packt Publishing recently approached me about quickly reviewing a video series on JBoss EAP and its c

Automating the build of MSI setup packages on Jenkins

A short “how-to” based on an issue one of my work mates recently faced when trying to aut

Decision making, problem solving, introducing ideas, being influencial

Usually when people think about software development, they just have the typical nerds in mind, shy b

Automate your UI testing with Nightwatch

Although I feel like I'm repeating myself, automate **everything**. We're here to automate the proces

Git flow with Jenkins and GitLab

At work I recently helped a team to transition from TFS to using Git as their source control manageme

JSConf.eu - React: Rethinking best practices

Today I saw a tweet pointing to a JSConf talk by Pete Hunt from Facebook, talking about ReactJS, Face

Boot your ajax app: Creating a splash screen with NProgress

While single-page JavaScript apps tend to be more dynamic and usually more interactive from the user

The narrow path between best practices and over-engineering

A couple of days ago I read a post by Petri Kainulainen about The Dark Side of Best Practices. He rea

JBoss Weld CDI for Java Platform

CDI stands for Context and Dependency Injection and is the standardization of the process of dependen

Developing Windows Store Apps with HTML5 and JavaScript

After JavaScriptMVC, today the second book arrived where I participated in the technical review proce

'object' does not contain a definition for 'errors'

Today I ran into an interesting issues when writing a unit test for an ExceptionFilter which involved

JSConfUS 2013 - Angelina Fabbor in JavaScript Masterclass

Continuous improvement is an important concept. Everyone wants to get better, to learn new things. Th

How to add a reading time indicator to your blog in ten minutes

Time is money, right, and given that nowadays we are continuously being flooded with an enormous amou

TypeScript: Application scale JavaScript

This article is about Hejlsberg’s talk about TypeScript at the Build 2013 conference. TypeScrip

Setting up a WPF Application With PRISM

This post mainly functions as a documentation for myself on how to setup a WPF client to use PRISM wh

Code Coverage with QUnit in JavaScriptMVC

Beside giving you an immediate feedback, unit tests are extremely useful as a regression test suite.

Learning JavaScriptMVC

About half a year ago, Packt Publishing approached me for a technical review of a new book about Java

Unit Testing Tip: Create Descriptive Tests

Your unit tests should be as descriptive as possible. The feedback they give you should be so clear y

Vae Soli

Couple of weeks ago I got my medium.com account activated. It is basically a blogging platform with s

Caching, jQuery Ajax and Other IE Fun

In the last couple of days I had quite a fun time debugging problems of our JavaScript SPAs on oldIE

Getting Started with Git and Visual Studio

A couple of weeks ago I wrote an introductory article “Git Explained for Beginners” which

Blog Like a Hacker with Jekyll and Nitrous.IO

One of the best moves I probably did about half a year ago was to move my Blog from blogger to Jekyll

Perfect Workflow in Sublime Text 2

I previously wrote about my Sublime Text setup. Well, Tuts+ has published a quite nice Sublime Text t

Git Explained: For Beginners

I’m working with Git now for about two years but only for my personal projects and those I have

My Sublime Text Setup

I absolutely love this editor. A ridiculously fast editor which has everything you’d love to ha

Modularity in JavaScript MVC Frameworks

JavaScript MVC architectures are a de-facto standard when you create complex single-page JavaScript a

Entity Framework: Intercepting SQL Queries for Contextual Logging

Proper logging is of major importance and a must have in any serious application. Writing logs is tri

Mocking Internal Interfaces with Moq

When creating some Class Library you should pay attention to the visibility of its members and have a

Interview with DZone

DZone, where I'm part as an MVB, recently contacted me for an interview for their weekly newsletter e

The Coaching Architect

In this talk, Roy Osherove speaks about how to become a better coach. A nice talk highlighting some o

DZone MVB Goodies Box

Yesterday morning I received a nice little box with a DZone label on it. Seems like they sent it to m

Test Your App Under Slow Network Speeds

I guess that I don’t have to start talking about the importance of testing in the software deve

ASP.net MVC Action Methods: Testing Against Anonymous Return Types

I don’t use dynamic types regularly, but there are always again situations when they come in qu

How to Stay Up To Date On Web Technology

The web is evolving extremely fast, especially in the recent years I have the feeling that it really

Transformer TF101 meets Jelly Bean powered by CyanogenMod

During the Christmas holidays I found a bit of time to upgrade my old (but still nicely working) Nexu

Retrospective 2012

Yes we’re still alive ;) No jokes apart, it’s time for a year retrospective.Normally, a r

Gist: My New Devbook

I always had the idea of having some kind of organized store, some kind of very simple knowledge base

Cerego - Learn Anything, Everywhere

It’s now roughly 2 years I’m out of university. While also at may day-to-day job I cannot

Programming ASP.net MVC4 by J. Chadwick, T. Snyder and H. Panda

This is one of the recent books I got from O’Reilly. It is probably the most comprehensive and

HowTo: Subscribe to Failed TFS Builds

When you use a build server it is a must to get notified in case of build failures. Microsoft’s

Visual Studio: Where Did My Shelvesets Go?

Do you use the TFS shelvesets?? I do, not regularly, but from now and then they’re quite useful

Deploying: Git vs. TFS Showdown

I think everyone agrees deployment should be as simple as possible. Seems like everyone talks about c

Don't Create Your Own Mapper, Let AutoMapper Do The Job!

Mapping is a common task when integrating different systems with each other. Although it might often

Visual Studio Tips

At work, I spend a huge amount of my time working with Microsoft Technologies. As such, I also use Vi

Output Caching in ASP.net MVC

Although nowadays most of us have broadband connections, resource caching is important as loading a r

Lessons Learned: Don't Expose EF Entities to the Client Directly

When we refactored our main application architecture, moving from an ASP.net WebForms app to a rich c

HRT - Humility, Respect and Trust

About a year ago someone told me: the hardest problems you'll face won't be of technical nature but r

2nd Dan Yoseikan Budo

This is obviously a rather non-technical post :). After officially passing the exam of the 2nd Dan in

Visual Studio Test Explorer: Automatically Execute All Unit Tests Only

In Visual Studio 2012 the team invested a lot in order to improve the testing experience. Sooner or l

Finishing my Blog Relocation

About six years ago I decided to create a Blogger account and start blogging. That worked perfectly a

Find Code Duplicates with Sublime Text

Code duplication is the worst practice ever, right? Well, actually there might be situations where du

Know Your Tools: Become a JavaScript Power-Developer

One of the issues classical web developers have when diving into the rich JavaScript apps world is th

Fluent Conference: JavaScript & Beyond Complete Video Compilation by O'Reilly Media

Missed this years Fluent Conference in San Francisco? Then this amazing video compilation is probably

Jasmine - An Introduction

This page is the result of taking notes from the session about Jasmine by Davis W. Frank at this year

It's time to learn CoffeeScript

Seing and reading all the stuff about CoffeeScript, I thought it might be useful to get into that &ld

git tf - An Early View

I really like git. I actually don't know exactly why. I guess it's mainly also because GitHub is such

Mobile JavaScript Application Development by Adrian Kosmaczewski, O'Reilly Media

If you are a JavaScript newbie eager to dive into creating rich mobile web applications, this book is

Entity Framework Schema Translations

You should have different setup environments, right. Normally something like dev, test (or staging) a

Testing and the Single Responsibility Principle

Automated testing is hard! Therefore, if you're about to learn it, just keep going. Resist the initia

UX: Why GitHub for Windows is better than VS TFS Integration

Did you already try GitHub for Windows? It's created in a modern Win8 looking style. Initially it act

An Example of Test-Driven Bugfixing

Unfortunately many people still don’t use a test-driven approach during development. That&rsquo

Why $.extend(someObj, anotherObj) might be dangerous!

You often have the need to merge two objects. A common use case is that of combining parameters for a

IE8 Trouble Continued...Hangs on Dropdown Selection

The trouble seems to continue. In one of our apps, when clicking on a dropdown list, IE8 hang up comp

Strange Error When Downloading File in IE8 from SSL Site

A couple of days ago, one of our clients called indicating that he wasn’t able to download a fi

Setting up my Developer Machine

Developers need to have fast machines! Today I just returned from a week of holidays at Kos

Choose Your Commit Messages Properly

I wrote already a couple of posts about version control stuff and best practices related with it. So

Detecting Location Redirects from JavaScript

A common scenario for using the HTTP Location response header is during an authentication process whe

Architecting for Failure at the Guardian

Architecting for the Failure, a presentation of this year's QCon London 2012. Michael Brunton-Spall g

Visual Studio: Set the Build Action for an Entire Folder

I'm sure you already encountered this problem, right? In my specific case I have a folder called "fro

Scaling Android Emulator Size: Without using Eclipse

As you might have read following my previous post I'm currently experimenting with mobile web so

HTML5 vs Android: Apps or Web for mobile development??

This is a hotly discussed topic recently. The web is now a fully-capable platform and it's getting be

Using NuGet to Distribute Our Company Internal DLLs

Releasing new software has to be simple and super fast! That was not the case for our company-interna

Respecting "the Zone"

Respect when someone is "in the zone"! Don't disturb him if it's not necessary. The "context switch p

Joining the DZone MVB Program

A couple of weeks ago I was kindly invited to join DZone as a MVB (Most Valuable Blogger). If you sho

QCon London - My Personal Recap

From the previous posts (or from those on my Tumblr stream) you might have understood my participatio

Sharpening the Tools

This is a talk from Dan North about Sharpening the Tools at QCon 2010. I had the great pleasure to li

Questions for an Enterprise Architect

Erik Dörnenburg answers: What is Enterprise and Evolutionary Architecture?, discussing 4 issues: Turn

I Want the Cursor to be placed in the 1st empty Textbox!

You develop a webapp, you have a couple of input fields and buttons on your page. Then the requiremen

Sequential Asynchronous Processing with jQuery Deferreds

Asynchronous processing is one of the most difficult things for devs to understand when switching fro

ASP.net MVC3: Doesn't Deserialize Nullable Properties from Json

A couple of days ago I noticed that the Nullable properties of a C# object were not properly deserial

Don't rant! Become Social and Contribute back!

Todays web experience has changed a lot and so has done coding as well. Everything is around being so

Eclipse: Importing existing project: "Invalid project description"

Monday morning, 07:30 AM. Me, starting the computer after the weekend, executing a git pull from my r

Don't Fall into the IEnumerable<T> Trap

Recently I upgraded some code of our company-internal class library and observed a plausible but stil

Help, Ubuntu 11.10 won't boot!!

Today I tried to start the new Ubuntu 11.10 from the live CD on the old desktop computer of my girlfr

2011 Retrospective and a New Look

I know it's a bit late for a 2011 year recap, but I didn't manage to write one earlier. Actually, I j

Writing IoC Supported Integration Tests using AutoFac

Using a dependency injection framework can greatly facilitate your code's testability in that yo

Exploring JavaScript: Scope Pollution when instantiating JavaScript Objects

John Resig has written a very interesting article (I'm not able to find just now) on how the current

Saying Goodbye to University

After my thesis presentation in march this year, my university career now ended officially with the d

Large-scale JavaScript Application Architecture

JavaScript programming has evolved a lot over the past years and has somehow revolutionized the way y

Some Usability Thoughts for the Weekend...

A couple of days ago I got the order to write a very simple program that would take a bunch of XML in

Use The "var" Keyword to Have More Maintainable Tests!?

I have to admit that initially when the "var" keyword has been introduced in C# I was quite precautio

AutoFac: ASP.net WebForms UserControl Dependencies Only Available At Page_Load Event

I'm currently adapting the architecture of one of our old but core projects, still written in ASP.net

jQuery Validation: Add a Required Field Marker

When you use jQuery for validating input fields you might want to automatically (based on the validat

Don't Underestimate the Trouble Caused by URLs in Emails

At a first glance, the title might seem strange, but wait. The company I'm working at creates e-gover

Exploring JavaScript: Iterating Over a Collection of Items

If I manage to do it, I'd like to write a series of introductory posts about programming in JavaScrip

What? Model-View-Controller in JavaScript?

At work I'm currently working on a new web architecture composed of a rich client written in JavaScri

TechVid: Become a Javascript Console Power-User

A nice 7 minute video showing some Chrome, Opera and Firefox power user commands for the JavaScript c

The Similarity of C# and JavaScript Syntax

I'm currently diving deeply into creating rich JavaScript web applications. You cannot deny that they

Testing JavaScript: Mocking jQuery Ajax Calls

When "seriously" developing JavaScript applications we obviously need to write tests. Being a fully d

JavaScript Scoping by Example

Understanding the scoping rules of JavaScript is one of the fundamental things to learn when getting

Integrating Jersey with Spring

Spring provides a lot of benefits and promotes best practices with its dependency injection mechanism

Why Did it Have to Be So Complicated Before??

I started web development using Java, basically during my studies at the university. When workin

Chrome Developer Tools: 12 Tricks to Develop Quicker

This is definitely a "must-have-seen" video for every JavaScript developer. Chrome has some really ni

Experiencing the jQuery 1.6 Breaking Changes

Unfortunately I did not actively follow the release of jQuery 1.6 as I would probably have noted that

JavaScriptSerializer: Circular Reference was Detected While Serializing an Object of Type...

Consider an ASP.net MVC web application where you use some Ajax for retrieving an object. Let's start

How often did you use the Yield keyword??

If you think about your coding...how often have you used C#'s yield keyword? To be honest I continuou

Check-in Small Pieces to your VCS!

A while ago our TFS master at work :) sent around a statistic about the "ExcutionCount" of each devel

Posting JSON Data to an ASP.net MVC 3 Web Application

The trend in today's web application development goes more and more in the direction of having rich,

Write the Minimum Necessary Code In Your Unit Test Case That Makes It Valuable

Maintainability is of major importance in software development. Usually writing tests against your co

Android Development Tools

Till recently, (IMHO) Android Developers had a very bad experience in designing graphical U

Create DOM Tree out of a Dynamic HTML String

Just a very short post before I go to bed as I'm really tired today. I just played around with some J

SmellyCode: A Classical Example of Non-Unittestable Code

I know there might be some degree of repetition in my posts when I speak about unit testing and mocki

Should Android Worry About the iOS 5 Update? Definitely Not!

With the announcement of the new iOS 5 at the WWDC, the first articles emerge already on the web rela

HowTo: Upgrade RAM of Your Macbook Pro

Here's a nice video that clearly explains how you can upgrade your Macbook RAM:

Visual Studio: The application cannot start

Today I started my Visual Studio 2010 instance by using the "Run as administrator" option (as I often

Basta-On-Tour Wrap Up Day 2: EF Best Practices, JavaScript, MVC

Day 2 at the BASTA! On Tour was dedicated to different kind of small workshops.Web 2.0 Applications w

Basta-On-Tour Wrap Up Day 1: Entity Framework

Well, this is a very short and brief wrap up of the 1st day here at the Basta! On Tour in Düsseldorf.

Document and Share Your Snippets: Presenting SnippetDoc

Increasing the productivity in the long run is most often tightly related to increasing the quality.

Is It More Readable??

I was just going over some code and came across some webservice methods having a lot of repetitive co

Trouble with the VS QualityTools.UnitTestFramework dll

I recently build a tool that automates and simplifies the unit testing of large parts of our applicat

Why Automated Tests Boost Your Development Speed

Many critics against writing automated tests directly address the additional time that is needed for

Load JavaScript Files Asynchronously

I recently worked on a component for our single-sign-on system. As part of that work I also developed

Concluding another Chapter

Yesterday I finally concluded my studies for the Master in Computer Science at the Free University of

A Test-Driven Dev's Nightmare: Meeting the HttpContext

My main task for the coming weeks at work is to extend one of our older but highly successful we

JCG - Joining the Java Code Geeks Program

A couple of days ago I was kindly invited to the Java Code Geeks program. Their goal is to build an o

Help, Gingerbread drains the Battery of my Nexus One!!

A couple of days ago I finally got the eagerly awaited system upgrade to Gingerbread on my Nexus One.

Getting Started with Android Development

Android has become very popular recently, especially among developers which would like to create some

Least Invasive Approach to Gain Root Access on the Nexus One

For my current Android research project I needed to copy an APK to the /system/app folder. Now for th

Deploy Android APK OTA Using Symbolic Links and Dropbox

Couple of time ago I wrote a blog post describinghow you can use Dropbox for deploying your Android A

Coding an Update Functionality for your Android App

(adsbygoogle = window.adsbygoogle || []).push({}); An immediate answer would be: why should I need t

FriendlyBool Extender What?

From now and then it happens that I have to databind some entities onto the UI, containing boolean da

Why Extract {Class | Interface | Method} Refactoring improves Testability and Readability

I still see many developers coding huge methods and large classes. The code looks very much procedura

Android: HowTo Detect Installed SQLite DB Version

As you might already know, Android comes with a preinstalled SQLite database. This is quite handy bec

ASP.net: Organize Your Resources the Correct Way!

ASP.net provides well-known mechanisms for localizing web applications, namely by extracting hard-cod

Tomcat: IllegalStateException: No output folder

Today, I started to create a couple of JSP pages for the server-side part of my MSc thesis project in

Win7: Windows Explorer Doesn't Refresh Elements

This was a really weird problem. Overnight Windows Explorer on my Windows 7 Enterprise installation s

Smelly Code: Direct Object Instantiation as a Testability Killer

This Smelly Code post discusses mainly a testability issue without going into further detail on other

Update SDK to Platform Gingerbread 2.3: Conversion to Dalvik Format Failed

Today I took the chance (and a bit of free time) to upgrade to the latest Android SDK release, namely

HowTo: Using VS2010 Web.config Transformations to Bypass SSL Authentication Locally

Most often when you create WCF webservices you'll want to run them in a secure channel, for instance

Juri Goes GIT - First Steps

Yes, I'm going "git" ;). An inherent part of structured, well organized working is to have your stuff

Don't Let Your Test Doubles Fool You

During unit testing it is common to substitute dependencies with a test double (see Martin Fowler's d

Testing Your SUT Against Exceptions

When you test your method for exceptions (which is good practice) the usually naive approach - which

Android: Attaching ClickListeners Declaratively

If you define a click listener for - say - a button in an android Activity, then you basically have t

More Than Just Synching - Dropbox

You know Dropbox, right (if not, head on to get it here)? I totally love that tool. I mean, you nearl

HowTo: MySQL Workbench to Remote Ubuntu Production Server Using SSH Port Forwarding

Before starting, I'm totally not the Linux command line guru, unfortunately. It feels like years of j

Intercepting WCF Operation Calls with Impersonated Identity

Take the following scenario. You have a WCF webservice with several operations. The communication run

Test-Driven Development and Automated Testing: A Metaphor

Motivation is an important factor when learning something new. It is what makes you ambitious and wha

Smelly Code: Eager Test

This post shows a common code smell in unit tests also mentioned in the xunit test patterns book, nam

Introducing #smellycode

Couple of month ago, after posting some comments about bad code on Twitter, my ex-work-mate Peter (gr

Lessons Learned: Make your ListItemCollection Linq Queryable

I love Linq! In my opinion it is one of the best features that have ever been added to C#, making dev

Retrieve Selected Items on Checkable ListView: Differences in SDK Level 7 and 8

I'm currently testing my Android app that I'm developing for my MSc thesis on different real devices.

Design Tech Talk Series Presents: OO Design for Testability

One of the main challenges in adopting TDD methodologies and automated testing with xUnit frameworks

TDD Test == Unit Test or TDD Test Unit Test?? Is it Really Important??

Recently I had an interesting buzz conversation with a former work-mate, Peter. Just like myself

HowTo: Teach Visual Studio to Remember Your TFS Password

I often now ran into the problem of continuously getting queried for the TFS credentials when connect

Do I Really Need to Test This??

Yes! Let's start straight of with an example. Consider I have my service (business) class SourceCodeI

Testing Newbies: Some Thoughts about Test First

A quick post just before diving into the weekend filled with Yoseikan training, swimming, going out w

Passing Property Names the "compiler-safe" Way

A common bad practice which I often find when browsing through code is to see people directly hard-co

HowTo: Install your Android app OTA on your device for testing

A fundamental thing when developing Android apps but also in general when developing with device emul

Practical example: Applying the Template Method design pattern

As I already mentioned in my previous post I'm currently doing domain objects to XSD generated object

Refactoring for the sake of compactness and reusability

Currently I'm doing a rather monotonic work, let's call it like this. We basically need to serialize

Let tests guide you through development

I'm currently working on my MSc thesis work which is divided into a project that has to be developed

Android Instrumentation test - AndroidTestCase: java.lang.IllegalAccessError

Today I started writing the instrumentation tests for the Android platform side of the project. For y

HowTo: Get an Android app's database from the emulator

Most apps need a database for storing their data onto the device in a structured form. Android's nati

Why factories with configuration files are better for decoupling but still a testability killer

As I already highlighted in several previous posts one of the most critical things when facing unit t

Boost your productivity using shortcuts in Visual Studio

A major aim of everyone is (or should be) to increase his personal productivity. Now productivity is

Can you trust your tests?

One important thing about unit testing but also about testing in general is that you can trust y

'\n' will break your JSON jQuery - WCF service call

I recently coded a WCF REST webservice that needed to be accessed from JavaScript. Basically it was a

Test-Driven-Design: A real world scenario of an email sending requirement

Many applications have requirements to send automatic emails to their users, especially in web enviro

HowTo: Prevent Visual Studio from auto-formatting your jQuery source

When writing JavaScript code with Visual Studio 2008 it automatically formats your source code when g

Unit testing asynchronous code

Today I wrote on a first prototype for my current thesis research. I started coding just ahead howeve

Tackle software dependencies with IoC and Dependency Injection

Coupling between objects creates "dependency", which per se is not bad at all. You will always have s

GWT Button with image AND text

GWT just provides the basic widgets like check boxes, hyperlinks, buttons etc...and leave the more co

Client-server communication peculiarities with GWT and App Engine DataNucleus

I just had to fight with a strange exception which got raised after a GWT-RPC call to the App Engine

GWT Hyperlink Widget with Image

Standard GWT Hyperlink widgets don't seem to give the possibility to associate an image. This is quit

GWT, App Engine and App Engine Data Classes

I currently have some time before starting with my Master thesis project which will bring me back to

DockLayoutPanel doesn't work correctly??

Suppose you'd like to create a layout like the following using GWT:With GWT 2.0 the documentation sug

HowTo: Launch JavaScript after async postback of UpdatePanel

Assume the scenario where you want to launch a JavaScript function after your UpdatePanel finished to

GWT DecoratorPanel style problems

I just experienced a nice side effect that happens if you use a DecoratorPanel. In my example it cont

Reloaded: Clean up your folder. For MacOS

When downloading files from the web I usually have a predefined folder where all the downloads from m

Are anonymous Lambda style event handlers a readability killer?

A standard event handling method in C# looks something like thispublic void SomeOtherMethod(){MyClass

Time Machine backups to Windows shared network drive

As some of you may have already read I acquired a MacBook Pro about half a year ago and I love it ;)

HowTo: Use your iPhone as a remote control for presentations

My latest post is already a while back but I'm currently extremely busy. More posts will come in Febr

HowTo: Use globally defined resources in your ASPX code

When creating localized web applications using ASP.net you may often come across strings which are th

Comments smell! Replace them with more expressive code.

As already pointed out in that post, here's another code example:...//300 = Italyif(aCompany.NationId

HowTo: Fade out div after some seconds using jQuery

Today I made a quick change to my blog. I don't know whether many of my readers noticed the possibili

Android SMS activity doesn't fill phone number

Today while fixing a bug for our current project we develop for the Android phone I found a strange b

Creating Test Suites with jUnit 4

A while back I've posted about how to enable the automatic (jUnit 3.8-style) creation of test suites

The power and simplicity of the Command pattern

Never thought of how to implement an "undo" function? Not that easy, huh? People in our architecture

MapView doesn't fire onLongClick event

Here's another curiosity I came across today while programming on my Android project. I was creating

HowTo: Include JavaScript file from JavaScript code

Recently a colleague asked me on how to add a JavaScript file reference to an HTML document from with

Implementing the onTouchEvent for the MapActivity

Android View classes expose an onTouchEvent(MotionEvent ev) method. As the name already suggests, by

Visual Studio intellisense not working properly

Recently a work mate pointed me out that my Visual Studio Intellisense seemed to not work correctly.

HowTo: Get the selected list index on Android Activity from context menu event

Consider the situation where you have an Activity displaying a list of items. You have a context menu

HowTo: Run IIS 7 on Vista 64bit OS in 32bit mode

A couple of days ago, I ran into a nice problem. I had to configure the setup of a new project using

ASP.net Ajax: Consuming webservice from client-side JavaScript

Yesterday I answered a question on SO related to the problem of consuming an ASP.net webservice from

Instantiating object from generic type: Java vs. .Net

Consider the following .Net code:public static class Processor{public static TItem CreateInstance<

Accessing the host machine from your Android emulator

I recently started a project where I develop an Android app (there will some posts later on ;) ) whic

Repeater looses its data collection. ViewState problem?

A while back I experienced a really strange problem in one of our ASP.net applications, namely my rep

Part 1: Writing testable code for the Android

Creating testable code is one of the major aims when designing good, maintainable applications. I act

Blog to learn...

John Skeet answered a question on SO related to how to learn good programming in terms of learning go

Annotation tools for the Mac

When you create scientific reports or you just prepare for exams you usually have to go over a whole

GWT meets Spring

GWT is quite evolving recently. There are a couple of reasons for that:Coding apps like Gmail and Goo

Are C# regions a good thing??

Well, I'd say it depends. If you use regions to logically group your code in your class, then it may

Law of Demeter: Nice metaphor

I just came across a nice metaphor for explaining the Law of Demeter. For those of you that didn't ye

Microsoft Ajax CDN

Scott Gu' just announced the launch of Microsoft Ajax Content Delivery Network. The name already expl

Add semantic through your code, not through commenting

Is it good to have a lot of code comments, explaining things s.t. your other team members know what w

Watch out when cloning objects

Cloning is never a good thing. I would say in most cases there is a better alternative for reaching y

It is not about writing tests, its about writing stories

Writing unit test and moreover having them in place when developing is a great thing. They give you s

Don't use negated method names!

What does this mean. Don't write something likepublic bool IsNotCorrect(...){...}but rather writepubl

NullsafeGet extension method? Simplicity for the cost of readability??

When programming, there is often the the situation where you have to continuously do the null-check i

HowTo: Control the rendered Html tag on your custom, composite server controls

Normally when you want to achieve that your custom server control is rendered inside a specific HTML

HowTo: Changing TFS workitem type from task to bug

Recently I found a bug while implementing another feature and in order to not forget it, I created a

Around(J2)ME listed on Softpedia

A project I developed together with my colleague Matthias Braunhofer during the course of Mobile Serv

Using code metrics as indicator for code refactoring

Developing software is not just hacking in a solution, but to develop simple, well structured and the

Server Error: Validation of viewstate MAC failed.

If you get the following error...Validation of viewstate MAC failed. If this application is hosted by

VS Designer: 'X' could not be set on property 'Y'

I'm currently developing some custom ASP.net server controls. Internally I often have lists, where th

Automatically find the Label associated to a WebControl through the AssociatedControlID

ASP.net Label controls own the property "AssociatedControlID" which points to the control to which th

HTML list item background image disappears on IE

I recently faced the problem that the background images that have been added to an HTML li tag over C

ExecutableTask pattern to tackle J2ME multithreading

Programming on the mobile device is quite different to more common environments like web or client-se

MIDlet for downloading image from the web

J2ME provides several ways for creating an Image object: Image.createImage(String) Image.createImage(

Do you know the "Joel Test"?

First of all, who is "Joel"? Joel Spolsky is a software developer in the US. I came across his intere

About Scrum - in under 10 minutes

Here’s a nice video that explains Scrum in under 10 minutes. It was quite useful when preparing

Mashup editor about to shut down

According to a note on the official Google Mashup Blog, they're about to shut down the Google Mashup

HowTo: Getting started with JUnit testing for Liferay portlets with Netbeans (for Eclipse users)

Besides at work, where I'm developing in .Net using Visual Studio, I'm a heavy Eclipse user. I use it

Page Speed: Firebug add-on for analyzing web page speed

Google just released Page Speed, a Firefox add-on for analyzing web pages in terms of speed. The tool

HowTo: Keep request parameters on validation errors with Spring's SimpleFormController

I recently had a problem when using Spring's SimpleFormController together with validation. So I post

HowTo: Get localized string different from the current culture

Localization is a key part of most applications. For this purpose you usually use resource files (pro

What happens if you think in Java and program C#

I'm quite jumping between the two languages. In the morning at the university I'm usually programming

Use Google Scholar and Latex for correctly citing papers

Citing papers is somewhat critical. There are predefined styles that have/should be respected. But it

JsTestDriver - Easy unit testing for JavaScript code

Today this video got my attention which is basically a short demo of JsTestDriver, a nice implementat

Help, my MSTest DeploymentItem doesn't get deployed!

MSTests allow you to define items you'd like to deploy to the deployment directory when executing the

String enumerations in C#

Enumerations are a very handy programming construct. Especially when you're developing in a larger te

Intel ProSet Wireless tool causing a lot of trouble

Years ago I installed the Intel ProSet Wireless tool for managing my wireless network connections on

Debugging and Testing the Web with Firebug

CommentRob Cambell, member of the Firebug working group gives a talk about Firebug, its history and a

HowTo: Make your custom ASP.net server control validatable

Content validation is a major issue of every application. It is an absolute "must have" to notify the

jQuery plugin development pattern

I'm currently diving more and more into the jQuery library. First I'm using it on a portlet I'm devel

Use Firebug everywhere!

You're a web developer and you cannot live without Firebug? Understandable. Firebug provides such gre

Best practices: The challenge of designing software for wireless devices

Designing good software for wireless devices such as mobile phones is not straightforward. Developers

HowTo: Bind an input field to a Date property using Spring's SimpleFormController

If you're using the Spring SimpleFormController for binding your Java bean object to the UI, you may

Internet Explorer 8: Compatibility

Here's an article written by Pietro Brambati on his blog about IE8 compatibility. It's quite interest

These damn spammers!!!

Once again one of my blog posts got infected by "spam" comments. But this time not the usual pharmace

Extended view reloaded

With the transition to the complete new blog design I initially had to leave away some features which

Best practices: Deploying webapps (contd.)

Some time ago I've written a post about best practices in deploying web applications by mentioning th

UML Use Case "extend" and "include" relationships

From now and then I have to create UML diagrams to model certain parts of software projects, especial

Floating figures and tables with Latex

Latex provides you with a lot of advantages when writing scientific papers. It allows you to fully fo

Problems with character encoding on cookies

For preserving the search criteria on some page of our web application we're saving the differen

Del.icio.us links and three new projects online

My blog readers can now bookmark posts I've written with delicious, by just clicking on the "add to d

Guidelines for promoting your blog

Some guidelines on how to promote and so to increase the traffic on your blog. These "rules" have bee

HowTo: Set the assembly binding location

This post is somehow related to the one I made just a couple of days ago. The application plugins (dl

Getting ready for mobile development with Eclipse, WTK and EclipseME

I just noticed that I did not post one topic about mobile development with J2ME, and that although my

HowTo: Detect Assembly dependencies at runtime

I'm currently developing a small project for myself, where I'm trying to build a small plugin framewo

Observation: Selected value behaviour of the DropDown list control

Today at work I observed a quite "nice" behaviour of the ASP.net DropDown list control. We usually ha

Google AJAX APIs: The Google Visualization API

From now and then I'm always taking a quick look at Google's API page to see whether something new an

Installing and configuring ATI graphics card drivers on Ubuntu Hardy

For the "Data Mining and Data Warehousing" course at the university, we had to implement a spectral c

HowTo: Persist viewstate on the server-side

In our last web project we had some performance issues, mainly caused by the extremely big page views

Accidentally deleted the Ubuntu main menu bar!!

I just clicked accidentally on the main top panel on the Ubuntu desktop and damn...I deleted the menu

HowTo: testing jFace Action class taking a StructuredSelection object

Let's consider the following jFace Action class:public class RateAction extends Action {private final

Accessing webcontrols inside the ProgressTemplate of an UpdateProgress

Apparently it is not possible to access server-side web controls that are within the "ProgressTemplat

Best practices: Tracking information on the source code with Visual Studio and TFS

An issue in managing a code base is not only to guide different developers through the development pr

By far the best "404 Not Found" notification I've ever seen!!

I just wanted to download a zip-file from a url provided by one of my university professors, but sadl

Blogging year 2008

First of all, happy new year 2009, I wish you all the best! :) This is a scheduled post of course :D

First steps with Silverlight. What about GWT?

Last week I had some time which allowed me to do some experiments with Microsoft Silverlight. I had t

Using extenders to abstract details and improve code readability

Extenders are a really cool feature of C#, which can be quite handy sometimes. I found the following

C++ linking libraries to build configuration in Eclipse

When programming in C++ you may often have to link at compile time to 3rd-party libraries which you'r

C++ experiences

Most of the courses I attended during my Bachelor were Java oriented with some C#, C and Haskell prog

JFace Table API with Eclipse RCP

Today I had to create a new view inside on an Eclipse RCP application representing data inside a tabl

Haskell type conversions: converting a String to Int

Today I just finished my battle-ship game written completely in functional programming (using Haskell

Persisting the current perspective state of an RCP

If you're developing on Eclipse RCP applications it may be interesting to save the perspective layout

Creating "soft-links" to folders on Linux

If you're working on Linux, especially on the command line, you'll often have to navigate through a l

HowTo: execute a file download from Windows command line

Under Linux it is often very comfortable to download files quickly from within the shell by typing wg

The type X is not accessible due to restriction on the...

For some university course we currently have to modify an Open Source application with LOC > 50,00

Strange focus behavior on Firefox 3+

Apparently it seems as if Firefox has changed the way the focus is set on the page starting with vers

Verifying command line parameters on C++ main method

Just a very quick example on how to verify the correct number of command-line parameters on a C++ (or

Problem: launching javascript from hyperlinks without redirecting

When I'm launching javascripts on a webpage I often use hyperlinks instead of buttons (it depends how

Javaforge causing a lot of problems

I'm currently developing an open source application for a University course. So as usually I establis

C/C++ programming on Linux

For a course at the university we have to develop a system using C++ on Linux. Being from the Java an

Haskell functional programming

Did you ever hear something about functional programming? I'm sure you did, and if you didn't you sho

Linux main menu bars (top and bottom) disappeared

Linux (Ubuntu) is generally great...and still I must admit that most often ones habits are stronger I

Fighting around with VIM

Today I attended the first lectures of the Master in Computer Science. Yes, I decided to go back to U

HowTo: Create 'linked tables' in MS Access

Assume you have to migrate some historical data from an application which used an MS Access database

Best practices: Deploying webapps

I don’t really know whether you want to consider this a “best practices” or not, bu

Revised: Changed values of readonly and disabled fields....

In a previous post I wrote about the problem that the values of readonly or disabled fields are not r

Changed values of readonly and disabled fields not accessible after postback

I don't know whether you noticed this problem already. ASP.net doesn't seem to handle the viewstate o

Google Chrome: browsing the Google way

I just came back from holidays at Rhodos (very nice) and flew over my mails and see there, one notice

JavaScript onChange event handling

When you're developing web applications you'll often encounter a situation where you react on changes

Strange GWT compiler error when trying to serialize Java objects

I'm currently working on a project on my own where I'm developing a rich client by using the Google W

The Controls collection cannot be modified because...

Programming on the web (JSP, ASP.net, etc..) is quite different than programming a desktop client. On

Dynamically modifying CSS class name attributes

CSS allows you to not only define the style attributes directly like<span id="mySpan" style="font-

Extending JavaScript objects with custom functions

It is nice how JavaScript objects can be extended with additional custom functions. Today for instanc

GMap script being reused

It is always nice to see people adapt and use your work. Today I made a quick look to my blog access

Recursive version of the FindControl(..) method

I don't know why there is none already implemented in the .NET framework. Anyway it wasn't too diffic

Specifying the size of a FileUpload control on Firefox

Apparently there seems to be a problem on Firefox when you want to specify a size for a file-upload b

Testing Ajax applications

Testing the correct functioning of an application is a major issue in software development. Errors ha

IE problems with AjaxControl Toolkit's AutoComplete extender

Microsoft's .Net AjaxControlToolkit provides a nice extender for doing Ajax-enabled auto-completion b

The type [X] exists in both...

You cannot imagine how fraught this compilation error was! On average every second launch of my web a

The ViewState hell: controls loosing their values

Recently at work I encountered severe problems with the ASP.net viewstate. We have build a very nice

Finally, my Katana arrived!!

Not the usual technical post :). Finally on Thursday this week my new katana arrived. It's exactly th

Attaching client-side event handler to radio button list

If you want to react to changes on a ASP.net radio button list from the client side you have to attac

No unit tests?? Forget it!

I know a lot of people that look somehow skeptic to unit tests and unit testing in general. They see

Best practices: VCS usage flowchart

So now there’s the graphical representation of my yesterday’s post. Computer scientists u

Best practices: version control system usage

I come to the office in the morning, start Visual Studio and fetch the latest versions of the source

Extended User Management under XP

This will become just a very short post since I'm too tired to write a lot today. I just set up my li

Retrieving list of installed applications

From now and then it happens that you have to reset your workstation, meaning to reformat your hard d

C# refresher

Recently I changed work and am now employed at the SIAG, a local informatics company which operates m

Noo! Google Browser Sync deleted my Firefox bookmarks

I'm using Google Browser Sync already for a longer time since it is quite comfortable for synchronizi

Logical separation with MVC

I'm currently working on a personal project (which I'll publish here, so keep an eye on my blog ;) )

Beside hacking each day...

...at the computer, I recently started a non-computer-science-related project :) , one where I was ab

Java Generics: C++ class templates vs. Java class generics

Generics are a great thing. C++ already had already a similar mechanism called templates. This for in

My new domain: js-development.com

Right! That's my new domain. Finally I've bought one. I planned to do that already for a longer time,

Congratulations Dott.ssa Stefanie Franchi

I'd like to take the occasion to congratulate my girlfriend Dottoressa Stefanie Franchi to her succes

Creating simple backups with WinRAR

When I'm working on some code for a program I'm developing, I got into the habit of creating regular

Roundup of blogging-year 2007

It's 2008!! I hope everybody of you had a good start. Well, I've seen that many bloggers post some ki

Unknown protocol: d

Today morning when starting a general build of the project I'm currently working on, I got an error s

Speakers don't mute when plugging in headphones!

As you may have recognized from the last post I start using Linux more often. With the new upgrade to

Where has Beryl gone??

Yesterday I upgraded Ubuntu to the new 7.10 (Gutsy) version. I don't know whether you've read a post

Learning by understanding and reusing code, not by copying!!

Time ago - as you may have already read on this blog here - I started to experiment with the GME API.

News Mapper experiences a revival

After I first published my Google Mashup project "News Mapper", it immediately got published first on

Red-Green color deficiency: whats that??

Well, it is a special kind of color blindness and I'm actually one of those guys affected by it. Rece

Clean up your folder

It's actually not really worth to put a post about this...but anyway :) I recently coded just a simpl

TDD, JUnit 3.8 and JUnit 4

I don't know whether you already got in touch with Unit testing or TDD (Test-driven development). At

Mapplets on own website: illegal???

Today morning Alex - a friend of mine - wrote me a mail, pointing me to a pcwelt.de article with the

News Mapper has success!

My recent News Mapper mashup seems to have some success (at least for me :) ). Today I registered 114

News Mapper: A mashup experience with the Google Mashup Editor

Now in the two weeks after my successful graduation and before starting to work I found some space fo

Blog Action Day: Water pollution and waste

Yes, the title is right ;). I know that I usually post computer science related stuff on my blog here

Blog(ger's) Action Day

I'd like to to do a little promotion of the Blog Action Day since I find the idea quite useful and in

Appearing on BlugPulse

On Sunday 02 this blog was listed on the 6th position in the BlogBites section of BlogPulse. Accordin

3-column-blog-layout

Some of my blog-readers may have noticed the change in my layout. At the moment I'm just testing it (

How to close Safari 3 for Win?? It's easy, just add a bookmark!

Why that?? Simply because adding (or better trying to add) a bookmark will result in a total crash of

Qi Gong

Last week tuesday was my birthday and I received a nice set of "Qi Gong" balls (see picture) from my

What now: Program Files or Programme??

A friend of mine has recently acquired a new Dell notebook with a German copy of Windows Vista. On th

Syntax highlighting on Blogger

I recently found a JavaScript and CSS based syntax highlighting framework called dp.SyntaxHighlighter

Beryl window manager

Some time ago, I wrote a post regarding Ubuntu where I also mentioned about the nice visual effects p

Logging is useful

When I develop some application, I usually add a logging functionality to it. I find logging useful,

Vista and stability??

I don't have yet installed the new - so much promoted - operating system of Microsoft: Windows Vista,

When Windows tray-icons disappear misteriously

Recently when starting my computer, I noticed that some icons were missing in the notification area (

The first step in a long way....

I've always been a sporty person :). Already in elementary school I started to play soccer in a team,

Diving into a new area

I never really got into the Linux world. Last year I installed Suse Linux, but I used it rarely, main

Smiley-support for blog-entries

I like it to add smileys to my posts, since I find they make it much more personally. On my old homep

Moving to a new home...

The step is done... :) After Blogger left its beta phase, I entertained the idea of moving my current

Dynamic imports solve all the problems, right?

Since Angular version 8, we support dynamic imports in loadChildren in the route declaration. In this

5 Angular CLI Features You Didn't Know About

I’ve been using Angular for years, not only the framework itself but the entire development pla

Angular quicklink Preloading Strategy

A few months ago I posted an article about Guess.js. Guess.js is a powerful library for predictive pr

Introducing Bazel Schematics for Angular CLI

In this blog post, we want to share our new schematics for Angular CLI which provide Bazel build supp

Building TypeScript Projects with Bazel

In this blog post, we’ll make a brief introduction to what Bazel is and how we can build our Ty

Joining Google

The past five years I’ve been heavily involved in the startup space, both, here in the Silicon

Playing Mortal Kombat with TensorFlow.js. Transfer learning and data augmentation

While experimenting with enhancements of the prediction model of Guess.js, I started looking at deep

Fast, extensible, configurable, and beautiful linter for Go

About a year ago I decided to polish my Go skills. Although the language is pretty small compared to

Introducing Guess.js - a toolkit for enabling data-driven user-experiences on the Web

About two months ago I published my initial research[1] on data-driven bundling. A few weeks after th

Machine Learning-Driven Bundling. The Future of JavaScript Tooling.

In this article, I’ll introduce the early implementation of a few tools which based on techniqu

JavaScript Decorators for Declarative and Readable Code

Decorators in JavaScript are now in stage 2. They allow us to alter the definition of a class, method

3 Tricks For Using Redux and Immutable.js with TypeScript

In this post, I’ll show you a few tricks which can make your life using Immutable.js and Redux

Follow Your Dream Career with Open Source. Personal Story.

This time I’ll violate my principle to write only about purely technical topics on my blog. In

Redux Anti-Patterns - Part 1. State Management.

For the past year I’ve been working on a project which uses React with TypeScript and Redux. In

Faster Angular Applications - Understanding Differs. Developing a Custom IterableDiffer

In this article we’ll take a look at another Angular abstraction - the differs and more specifi

Faster Angular Applications - Part 2. Pure Pipes, Pure Functions and Memoization

In this post, we’ll focus on techniques from functional programming we can apply to improve the

Faster Angular Applications - Part 1. On Push Change Detection and Immutability

On AngularConnect 2017 in London, I gave a talk called “Purely Fast.” In the presentation

Understanding Dynamic Scoping and TemplateRef

This post will be dedicated to template references in Angular and dynamic scoping. Although the main

Implementing a Simple Compiler on 25 Lines of JavaScript

I already wrote a couple of essays related to the development of programming languages that I was ext

Developing Statically Typed Programming Language

In this blog post we’ll go through a sample implementation of a type checker, interpreter and a

WebVR for a Gamified IDE

In the first part of this blog post I discuss the idea of using virtual reality for gamification of m

7 Angular Tools That You Should Consider

In this article we’re going to quickly explore 7 Angular development tools which can make our e

Announcing ngrev - Reverse Engineering Tool for Angular

Have you ever been hired to work on a huge legacy Angular project with thousands of NgModules, compon

Implementing Angular's Dependency Injection in React. Understanding Element Injectors.

Recently I’ve been blogging mostly about Angular and it’s not by accident! Angular is an

Distributing an Angular Library - The Brief Guide

In this post I’ll quickly explain the minimum you need to know in order to publish an Angular c

Angular in Production

In this informal essay I’ll go through a case study of my experience in using Angular (2 and ab

Ahead-of-Time Compilation in Angular

Recently I added Ahead-of-Time (AoT) compilation support to angular-seed and got a lot of questions a

2.5X Smaller Angular 2 Applications with Google Closure Compiler

In the post “Building an Angular 2 Application for Production” we explored how we can dec

Using Stripe with Angular

Stripe offer a set of APIs which allow businesses and individuals to easily accept and manage payment

Building an Angular Application for Production

Progressive Web Applications help us build native-like web apps, thanks to amazing tools such as Serv

Implementing the Missing "resolve" Feature of the Angular 2 Router

For the last a couple of months I’m working on an Angular 2 based PWA. The more complex the app

Scalable Single-Page Application Architecture

In order to have better understanding of the following blog post you should be familiar with the fund

Managing ambient type definitions and dealing with the "Duplicate identifier" TypeScript error

Maintaining the angular-seed, I found out that the most common problem for developers using the proje

Static Code Analysis of Angular 2 and TypeScript Projects

So far, most of the blog posts I’ve written are tutorials; they explain how we can use given te

Enforcing Best Practices with Static Code Analysis of Angular 2 Projects

About two weeks ago I published the initial draft of a Community-driven Angular 2 Style Guide. It was

ViewChildren and ContentChildren in Angular

In this article I’m going to explain the difference between the concepts of view children and c

Dynamically Configuring the Angular's Router

Warning: This version of the Angular 2 router is now deprecated! This means that soon the used below

Angular 2 Hot Loader

A couple of months ago I watched a few talks from ReactEurope. I was truly impressed by a few of them

Lazy Loading of Route Components in Angular 2

Warning: This version of the Angular 2 router is now deprecated! This means that soon the used below

Aspect-Oriented Programming in JavaScript

Note: The following blog post is based on the library aspect.js, which can be found here.The object-o

Flux in Depth. Store and Network Communication.

This is the second, and probably be the last, blog post of the series “Flux in Depth”. In

Using JSX with TypeScript

JavaScript is a weird language although, we love it the way it is. However, I’ve had quite a pa

Flux in Depth. Overview and Components.

This is the first blog post of the series “Flux in Depth”. Is this “yet the another

Even Faster AngularJS Data Structures

This is the last post of the series “Boost the Performance of an AngularJS Application Using Im

Boost the Performance of an AngularJS Application Using Immutable Data - Part 2

A few weeks ago I posted the article “Boost the Performance of an AngularJS Application Using I

Angular2 - First Impressions

On 18th of September 2014 was pushed the initial commit of version 2.0 of the AngularJS framework. A

Build Your own Simplified AngularJS in 200 Lines of JavaScript

My practice proved that there are two good/easy ways to learn a new technology: Re-implement it by yo

Persistent State of ReactJS Component

ReactJS is a framework, by facebook, which adds some well known concepts into the UI development. Eac

Boost the Performance of an AngularJS Application Using Immutable Data

I have affinity to functional programming since my first year in college. During my initial contact w

Processing Binary Protocols with Client-Side JavaScript

Last couple of weeks I’m trying to build high-performance consumption of binary protocol throug

Stream your Desktop to HTML5 Video Element

In this blog post I’ll share how you can stream your desktop to HTML5 video element.All you nee

Multi-User Video Conference with WebRTC

This is a tutorial for how to implement a multi-user video conference with WebRTC, AngularJS and Yeom

Asynchronous calls with ES6 generators

ES6 generators have landed in Chrome 39 Beta on 9th of October and are already available in the stabl

Binary Tree iterator with ES6 generators

ES6 specification is being clarified every passed day! One of the key features of the new version of

WebRTC chat with React.js

In this blog post I’m going to share how could be build WebRTC chat with React.js. Before we co

AngularJS in Patterns (Part 3)

This publication aims to provide a more theoretical overview of some of the AngularJS components in o

AngularJS in Patterns (Part 2). Services.

This publication aims to provide a more theoretical overview of some of the AngularJS components in o

Using GitHub Pages with Jekyll!

I’m switching to GitHub pages with Jekyll. There are several reasons behind my decision: Faster

AngularJS in Patterns (Part 1). Overview of AngularJS

In this series of blog posts I’m going to cover the paper I’m writing at GitHub.It aims to provide a

Singleton in JavaScript

Wikipedia describes the singleton design pattern as: The singleton pattern is a design pattern that r

Express over HTTPS

Sometimes you want to test your application in environment closer to the real world. In such cases yo

What I get from the JavaScript MV* frameworks

Why should I use JavaScript MVC, MVVM, MVP or simply MVW(hatever works for you)?When I talk with peop

Remote Desktop Client with AngularJS and Yeoman

In this blog post I’m going to show you how to build a VNC client using AngularJS and Yeoman. The sou

The magic of $resource (or simply a client-side Active Record)

At first sight AngularJS seems like a magical framework, which does some weird but awesome things lik

AngularJS Inheritance Patterns

Since AngularJS does not provide any built-in features for using inheritance, in this blog post I’ll

AngularAOP v0.1.0

In this blog post I’ll introduce you the new way of annotating services included in AngularAOP v0.1.0

Advanced JavaScript at Sofia University

In this blog post I’ll tell few words about the course Advanced JavaScript which Georgi Penkov, Evgen

AngularJS style guide

Today I created a GitHub repository which contains a set of good practices and style guides for Angul

Lazy prefetching of AngularJS partials

This blog post is concentrated about web performance. I’ll skip the well known stuff about combining

VNC client on 200 lines of JavaScript

In this quick blog post I’ll show you how to create a simple VNC client in about 200 lines of JavaScr

Aspect-Oriented Programming with AngularJS

In the following blog post I’ll write few words about what is Aspect-Oriented Programming, why I thin

CSS3 flipping effect

As you know because of the SIMD nature of the GPU it’s extremely good for graphical calculations. Sin

Practical programming with JavaScript

Before few months I was invited by Telerik Academy to make a talk about JavaScript. Last Monday Maria

Why I should use publish/subscribe in JavaScript

This post is inspired by my answer at StackOverflow.So why we should use publish/subscribe? Why it is

JavaScript, the weird parts

To say that JavaScript is becoming more and more popular is such a typical and boring way to start su

Functional programming with JavaScript

This article is about the functional concepts of JavaScript. Some of them are built-in the languages,

plainvm

plainvm can take the virtualization into different level of usage. To prove this I’ll first ask few r

Looking for performance? Probably you should NOT use [].sort (V8)

A few days ago, I’ve created a GitHub repository. It’s main goal was to collect different algorithms

JavaScript image scaling

I haven’t wrote here for a while so I decided to write about something more practical. Actually the i

ELang

And one more blog post by me! It’s going to be in brand new topic than the others. For about an year

Caching CSS with localStorage

Since HTML5 became wide supported the most popular aspects I hear about were it’s canvas, WebSockets

Self-invoking functions in JavaScript (or Immediately Invoked Function Expressions)

There are a lot of interesting things in the syntax of JavaScript, one of which is the definition of

Asus N56VZ + Ubuntu 12.04 (en)

It seems that it’s common a problem to setup Ubuntu on the new Asus N56VZ so I decided to create an E

Asus N56VZ + Ubuntu 12.04

Един пост на български, защото мисля, че ще бъде по-полезен.Доста време се тормозя с подкарването на

Debian Squeeze + LXDE on Google Nexus S (or having some fun while suffering)

I’m here again, after a long pause. For a while I’ve got problems with my health and I’m nailed at ho

HTML5 image editor

As you see HTML5 is everywhere (of course I exclude IE…or just before version 10). Web site us

Курсови проекти – ФМИ

Тъй като съм вече студент 3-ти курс във ФМИ и курсовите проекти се натрупаха, мисля че мога да бъда п

Carousel Gallery

And one post in English…For few days I’m developing one jQuery UI plugin. It’s picture gallery

SofiaJS...

�� потребителската група SofiaJS последните няколко месеца се случиха доста интересни неща, а на мен

Color animation plugin for jQuery

Hi! I haven’t wrote since a long time but there’s so much code and so little time…It’s bad tha

SofiaJS

Преди няколко месеца внезапно (както май често става) започнах да мисля за програмиране (как ли така&

Sound notification in web page

Few days ago I was creating a system in which it was necessary to implement a sound notification feat

f8...

Тази сутрин пуснах прословутата f8…Бях с големи очаквания (дори поствах за нея), може би зарад

f8

Ето нещо интересно, което ще можем да следим онлайн утре сутрин:

Google+ API

Като всеки любознателен developer и аз се включих към хората, които искат да получат mail от Google п

Ajax without jQuery for beginners

Before years I was writing all the code by my own, without additional libraries (including jQuery). F

Blogger image resize

That’s my second post here and the first one which is going to have any sense. Today a friend of mine

Hello world!

Hey,That’s my first blog here. I’ll try to put some interesting stuff about the Life, Universe and Ev

Experimenting with the Streams API

I am always looking for ways to build faster, slicker web pages. Where applicable, I’ll use great new

Brewfather - Progressive App Review

In my spare time I enjoy a little bit of homebrewing. What first started out as an experiment with a

Determining Service Worker Support for your Site

Have you ever thought about building a Progressive Web App or even adding a service worker to your we

Tips for setting up a Ghost blog on Amazon AWS EC2

After a long overdue refresh, I have recently moved this blog to Ghost CMS. Overall, I have been very

Software Team Maturity Matrix

Whether you lead a small team of developers, a tech startup or a huge department, it’s important that

Dynamic resources using the Network Information API and service workers

My journey to and from work involves a small journey on a train. Without fail, there is this spot alo

Getting started with the Ambient Light Sensor

Whether I’m in the car or walking around a new city, Google Maps is one of the apps that I couldn’t l

Progressive Web Apps - Book Giveaway - Results

Firstly, I'd like to say a massive thank you to everyone who retweeted and liked the tweet for this g

How to display a "new version available" for a Progressive Web App

Have you ever been on a website and noticed a popup notification that suggests that there is a new ve

Progressive Web Apps - Book Giveaway

Progressive Web Apps has recently been released, and if you haven't already gotten your hands on a co

Service Workers can save the environment!

Woah! The title of this article might seem like clickbait - but bear with me. Using service workers c

Converting a Ghost blog to a Progressive Web App

Regular readers of this blog might notice a slightly different look and feel to this site. I’ve recen

Lessons learnt: Leaving an organisation

In my experience, leaving an organisation is a big deal. Given the amount of time we spend at work, w

Progressive Web Apps - My new book is available!

I am super excited to announce that my latest book has been published and is available to purchase!A

Guest Posts and Advent Calendars

This year, I’ve been lucky enough to write two articles for two great “advent calendar” style sites.I

Adding Search to your Eleventy Static Site with Lunr

I recently came back from connect.tech (one of my favorite conferences). I had the honor of giving no

Using IndexedDB with Vue.js

It’s been a while since I’ve talked about one of my favorite APIs, IndexedDB. Mainly because as cool

Why I'm Digging Eleventy

It’s been quiet around here lately and for that I apologize. Between the new job and a bunch of trips

Building a Netlify Stats Viewer in Vue.js

I’m in somewhat of a “stats building” mood lately as this is my second (see last month’s post on buil

Using OAuth and Vue.js to Build an Untappd Stats Page

Every now and then I try to remember to remind folks - I hope that my readers assume when I share stu

Sending a Notification to Alexa when Netlify Builds Your Site

This will be a quick post and credit for the idea goes to Stacey Higgenbotham and her post from last

An iTunes Audio Enabled Search Built in Vue.js