I am collecting a couple of helper functions into a library @codeandchaos/utility-belt. It is at the moment a library for my personal use…

Edition 1 Welcome to the Code and Chaos Newsletter. On regular intervals I will be sharing site updates, as well as interesting articles…

The mythical man month is a collection of essays about software engineering. Some articles cover topics that have barely changed over the…

I successfully completed this job interview coding challenge. It’s going to be interesting to look at the questions and solutions. I will go…

What is the output of following piece of code? The simple answer for this question is: However to get to this answer you have to…

Problem You need to identify “interesting” numbers. When the number is interesting return 2, if it is “near” an interesting number return…

Uncle Bob in his book “The clean coder” has a very clear answer to his question: ”You should plan on working 60 hours per week. The first 4…

Paul Arden - It’s not how good you are its how good you want to be It is a book about creativity, business, marketing and what you want out…

Problem The question is basically count the number of instances of Friday the 13th in a given year. Original Problem: https://www.codewars…

This is my VSCode setup. I am working currently primarily with TypeScript and ReactJS. Last updated: May 2020 tl;dr Look and Feel Theme…

When writing a function sometimes you cannot avoid passing multiple arguments into the function. Lets take a look what is the cleanest way…

Assuming we have a function . How can we ensure that the function is doing that what we expect it to do. Expected Result Tests The first and…

We are going to take a look at how to implement the “add-numbers” function. The purpose of the “add”-function is to add two numbers, it…

When you start programming, probably one of the first things you will learn is how to output “Hello World!“. The program is simple to write…

The VS Code debugger is pretty awesome. You can learn more about it in the official guide. If you want to debug typescript it does not work…

News / Updates It is difficult to keep up to date with all the rapid developments in the tech field. I recommend using an RSS Reader like…

When you are writing code your main focus should be solving the problem at hand - creating code that works. However this is only a very…

The book “JSON at Work” by Tom Marrs, it is a great introduction on how to create and use JSON. It covers topics on how to quickly set up a…

Polacode makes beautiful images of your code. The snapshot will use your current vscode theme and fonts. You can get it from the VSCode…

We will take a quick look at how to set up a project using TypeScript and Jest. By adding Jest to the project from the beginning this should…

One of the biggest questions in programming. Everybody has an subjective answer to the question, as everybody develops their own style of…

When looking around for example applications that use Mobx 5.x combined with Mobx-react 5.x and TypeScript 3.x I did not find any useful…

TypeScript is basically JavaScript with types. When writing your code you must define the types of your variables and optionally the returns…

A recent article on InfoWorld titled Breakthrough: Python reaches Tiobe index Top 3 - Yey Python - But wait, what is being ranked? The TIOBE…

The book “Cracking the Coding Interview” helps you to survive the famous ‘technical interview’. Major tech companies like Google, Amazon etc…

8kyu - Logic Drills: Traffic light You need a function to handle each change from green, to yellow, to red, and then to green again…

8kyu - positiveSum The first question is to sum up all the positive integers in an array. Basically two things need to be done: Filter out…

Oracle has just announced that the End of Support for Java 8 is going to be in January 2019. This, in turn, means that every business using…

Image Designed by Freepik The ‘autofill’ feature of browsers is a blessing and a curse. The feature enables the browser to reuse the data…

Ever since React Introduced Hooks it is more elegant to simply write functional components. Today I will transition my MOBX example Project…

Now I will be assuming a couple of things: You have a GitHub account and you created a repository for your app. You created a react app…

You got numbers, you want to know how many bits are flipped to a 1 Source: https://www.codewars.com/kata/bit-counting/train/python Approach…

I am exercising to get back into Python. Even though the solution to this exercise is quite straightforward, you could tweak the code a…

Given a list of integers and a single sum value, return the first two values (parse from the left please) in order of appearance that add up…

node-gyp is really useful and annoying. fails if Python 2.7 and a C# Compiler is missing. You could use to get and install the missing…

In essence, the test is a quick 12 yes/no Questions that allows you to quickly determine how good your development workflow really is…

PuppeteerJS essentially allows you to automate Chrome. Headless Chrome allows you to run Chrome without actually rendering the webpage…

Developing React (with create-react-app) and Visual Studio Code you usually press and then . The script from create-react-app then…

I took a quick look at Microsoft Introduction to ReactJS, not to actually learn React, but to evaluate how good the materials are for a…

The course DEV275x Writing Professional Code is a very short introduction to best practices when it comes to writing code. As usual, this is…

One of the common problems when running a larger project is that you need to use fixed versions in your package.json file. But at the same…

With NPM 5, npm has started to create a “package-lock.json” file. It ensures that some dependency tree is identical on every developer’s…

My notes on the great course Microsoft - Advanced CSS Concepts on edx. Lesson 01 Responsive Layout Covers the basics of Responsive Layout…

When working on a project you usually install various packages from NPM. Of course, these packages are maintained and updated, adding more…

Now working with Gulp you will discover that you run into a couple of minor problems. Especially in sequencing the different types of tasks…

tl:dr is used for page navigation is used for actions on the page is used in a form and the value is used in the form The Problem Let’s…

When you try to marry old JSP Technology with the modern wonders of Typescript/ES6. You will want to expose some data provided by the…

I recently took a look at the course materials for Web Tooling and Automatisation. Overall the course is very well structured and introduces…

Recently I was playing around with the HEXO static site generator. For my setup, I was using Hexo in combination with Gitlab CI and the ftp…

The problems in this Kata File-Path-Operations revolve around implementing common filename functions. Functions are needed to find the file…

This week the course is covering another two very important topics: Testing and Specifications. LECTURE 3: Testing Testing is a very…

MITx has released a course titled “Software Construction in Java”. The course is aimed at more experienced Developers and is going to teach…

Preparation You need a USB-Drive with a minimum 3GB free space. Installation Files Microsoft has released a download tool for Windows 1…

Typically to get started with a web-project you would start downloading libraries, configuring grunt etc. Yeoman is a project that takes…

There are a lot of tips and tricks on how to optimize your system memory. One of the main ways to get the most out of your system is to…

I recently completed the course “Introduction to Linux” by the Linux Foundation on the edX platform. Instead of paying 2500USD for the…

Now isn’t that a silly title, sadly it’s one of those things I never thought I would have to deal with. Especially as Internet Explorers…

Let’s say you have function and function both functions are very similar and throw similar errors. If you have the possibility to avoid…

You start your day out by putting your laptop onto your docking-station and then go get your morning coffee - just to come back and find…

Swap the Ctrl and Fn Key Lenovo has awkwardly placed the Fn key as the first key of the last row instead of the “Ctrl”- keys like most…

For some reason on some T430 laptops, the fan is always on even if the CPU has a 0% load. If you are running Windows here are a few…

Processing CSV Data with the Google App Engine is a two-step process. First, you need to upload the data and store it in the blob store…

Sometimes you run into the problem that someone has forgotten their password for their home PC. As a good friend you are going to help them…

Apparently using a QPushbutton with an Icon does not work. As alternative, I am going to use a QToolbutton.

Here is an example that adds Scrollbars to a QVBoxLayout. The one thing that tripped me up was that you need to explicitly create a Widget…

This example creates a QTreeListWidget to display a folder-structure.

You can add Icons to many types of QWidgets. PySide provides you with a method to access the native system icons. A complete list of icons…

The QMessageBox is very useful for creating standard filesystem dialogs (it even comes with alert sounds) and is limited to display an icon…

Windows 8.1 finally gives you the option to boot directly to the desktop (without the need for a 3rd party program). You can enable this…

PySide (www.pyside.org) is an awesome Framework that allows you to use Qt with Python. Installation is as straightforward as typing I will…

Project Euler is a collection of challenging mathematical and computational problems. The first couple of problems are rather…

Let’s speed up my original installation by using a powershell script instead of manually configuring windows. 1. Install 1.1 Win 7 SP…

Using the AbstractTableModel the easiest way to store the table data is to use a Vector of Vectors. You have to implement additional…

Currently I did not find the time to create a fully integrated automated Windows 7 Installation Disk. Here are my notes on how I would set…

So you know what you are doing and have Antivirus installed, are not downloading crap and hate useless security warnings nobody cares about…

In order to preview Camera Raw files in your explorer you need to install two packages: Microsoft Camera Codec Pack Adobe DNG The “Microsoft…