Use your singletons wisely: ten years later - The Code Whisperer
While injecting the dependency appeared to make the classes more tightly coupled, it simply revealed the coupling that already existed. A was already tightly coupled to B and B to C. When we tried to inject the dependency, we made that coupling more explicit and easier to remove.
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The JavaScript Object Model: A deep dive into prototypes and properties
Speaker today is Henning Koch, Head of Development at makandra.
This talk will be in German with English slides.
Introduction
As web developers we work with JavaScript every day, even when our backend code uses anothe...
The Ruby Object Model
In Ruby (almost) everything is an Object. While this enables a lot of powerful features, this concept might be confusing for developers who have been programming in more static languages, such as Java or C#. This card should help understanding t...
How to create giant memory leaks in AngularJS (and other client-side JavaScript)
This guide shows how to create an AngularJS application that consumes more and more memory until, eventually, the browser process crashes on your users.
Although this guide has been written for Angular 1 originally, most of the advice is relevant...
Async control flow in JavaScript: Promises, Microtasks, async/await
Slides for Henning's talk on Sep 21st 2017.
Understanding sync vs. async control flow
Talking to synchronous (or "blocking") API
print('script start')
html = get('/foo')
print(html)
print('s...
A collection of useful design resources for developers
This collection contains some useful design resources for developers. Many of them were mentioned in the Refactoring UI tutorials.
Tutorials
- Refactoring UI Videos
- [Refactori...
The Origins of Scala
When Java first shipped, Bill Joy and James Gosling and the other members of the Java team thought that Java should have generics, only they didn't have the time to do a good job designing it in. So because there would be no generics in Java, at l...
The Pragmatic Bookshelf | Tell, Don't Ask
You should endeavor to tell objects what you want them to do; do not ask them questions about their state, make a decision, and then tell them what to do.
Why you can't use timezone codes like "PST" or "BST" for Time objects
Rails' ActiveSupport::TimeWithZone objects have both a timezone code and offset, e.g. Thu, 28 Mar 2019 16:00:00 CET +01:00. Ruby's stdlib TZInfo also has time zones, but with different identifiers.
Unfortunately, not all timezone codes can b...
Get the initial username which you used to login to your Linux system
If you need the initial user which you used to login to your Linux system or the time when you login you can do:
whoami
One purpose of this could be the .bashrc to show different Bash Prompts for root to different users:
if [ $(whoa...
Why UML Fails to Add Value to the Design and Development Process « Learning Lisp
UML is applying an abstraction at the wrong end of the problem. It is primarily used to sketch object models for inferior languages.