When a CSS3 animation makes the animated element flicker, it may well be due to pixel fragments being handled differently...
The CSS property z-index is not as global as you might think. Actually, it is scoped to a so...
If you want to load an SQL dump from an ActiveRecord migration, you might find this to be harder than...
If you get this error (probably because you want to load some modules): # modprobe xt_comment FATAL: Could not load...
I couldn't successfully execute a simple iptables command and got this error on an Ubuntu server: # /sbin/iptables -I INPUT...
Geordi 1.0 features a command line application geordi, that holds most of Geordi's previous commands. New features
Jonas Nicklas, the author of Carrierwave and Capybara, has released Refile, a gem for handling file uploads in Rails. It...
This jasmine plugin helps with testing DOM manipulation in two ways: It gives you DOM-related matchers like toBeVisible() or...
Rails includes a way to see what an e-mail will look like. Integration to RSpec All you need to...
It might happen that your Sidekiq queue gets stuck, hanging at 0% CPU load. When we inspected the process using...
If you have trouble updating something on FreeBSD you should always take a look in the UPDATING file.
Upgrading from Ruby 1.8.7 to 2.1.2 took me an hour for a medium-sized application. It involved hardly any changes...
Using this gem I could get JSON generation from a large, nested Ruby hash down from 200ms to 2ms.
To avoid n+1 queries, you want to eager-load associated records if you know you need to access them...
See attached link. The gist is: .element { position: relative; top: 50%; transform: translateY(-50%); } Works in all web browsers and...
Parses URLs of social networks to extract IDs or screen names. It does not get confused by child routes: you...
In whenever you can schedule Ruby code directly like so: every 1.day, :at => '4:30 am' do runner "MyModel.task_to...
An all-in-approach to fix the problem of pending AJAX requests dying in the browser when the server ends...
When your Rails controller action responds with only a simple text, render text: 'Hello' may not be what you want...
When using @media CSS queries, Internet Explorer 8 and below will fail to respect them. Though there are several options...
Sometimes you have a test expectation but actually want a better error message in case of a failure. Here is...
I had a huge MySQL dump that took forever (as in: days) to import, while I actually just wanted to...
In Ruby, classes and modules are called constants. This card explains how Ruby resolves the meaning of a constant.
Install and configure the AWS Command Line Interface Show existing certificates to test if the AWS Cli is working: