Give table columns equal width using CSS
If you want to distribute a <table>'s width equally over its columns, you can use the following CSS property:
table-layout: fixed
It is supported by every browser ever Show archive.org snapshot .
Related cards:
Using ActiveRecord with threads might use more database connections than you think
Database connections are not thread-safe. That's why ActiveRecord uses a separate database connection for each thread.
For instance, the following code uses 3 database connections:
3.times do
Thread.new do
User.first # first databa...
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...
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...
CSS: Matching against attributes and their values (or parts of them)
You probably know that you can use CSS selectors to match against elements and their attributes, such as:
a[title] { /* any <a> that has a "title" */ }
a[data-fancy="true"] { /* any <a> that has their "data-fancy" attribute set to "true" *...
Lightning Talk: Coverage based Test Case Prioritization in Ruby on Rails
For my computer science bachelor's thesis I programmed and evaluated a CLI Test Case Prioritization (TCP) tool for makandra. It has been written as a Ruby Gem and was tested and evaluated against one Ruby on Rails project....
Using CSS transitions
CSS transitions are a simple animation framework that is built right into browsers. No need for Javascript here. They're supported by all browsers.
Basic usage
Transitions are used to animate the pat...
Find the innermost DOM element that contains a given string
Let's say you want to find the element with the text hello in the following DOM tree:
<html>
<body>
<article>
<strong>hello</strong>
<strong>world</strong>
</article>
</body>
</html>
You might think of using jQu...
Designing HTML emails
The 90s are calling: they want their tables back. Unfortunately, you need them all for laying out your HTML emails.
Email client HTML rendering is way more scattered than browser HTML. While you might have a pretty good understanding of what feat...
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...
Differences between transactions and locking
Web applications can be used by multiple users at the same time. A typical application server like Passenger has multiple worker processes for a single app. In a distributed deployment setup like we use at makandra you w...