If you have multiple monitors and want to share a given screen with your call partner, drag the caller window...
In Ruby, classes and modules are called constants. This card explains how Ruby resolves the meaning of a constant.
Modern IRB has time measurement built in. measure # Enable measure :off # Disable Custom Should your version of IRB not offer...
Assert rmagick provision ... Gemfile gem 'rmagick', '2.13.2' # at this moment the latest stable version config/initializer/carrierwave.rb require 'carrierwave/processing/rmagick' ... and define a...
Use protocol independent URLs whenever possible so that the browser will choose the protocol related to the protocol which the...
Font Awesome 4 has renamed all icons. What the fuck. Check the attached link for an icon list for the...
Today I ran into trouble installing therubyracer on Ruby 1.8. The installation failed with *** extconf.rb failed *** Could not create Makefile...
If you need to enable NewRelic monitoring on certain machines within the same Rails environment, a simple solution is to...
Ubuntu has a package mysql-sandbox that lets you install multiple MySQL versions into your user home: Install mysql-sandbox...
It is good programming practice to Don't Repeat Yourself (or DRY). In Ruby on Rails we keep our code...
Establishing a new SSH connection usually takes only a few seconds, but if you’re connecting to a server multiple...
So you client has asked you to implement a row of buttons to like the URL on Facebook, Twitter and...
| Chrome | CTRL+Shift+J | | Firefox / Firebug | CTRL+Shift+L |
The mysql2 gem in version 0.3.13 might break while compiling on older patch releases of Ruby 1.9.3 within rvm:
For all late night coders: The program "redshift" changes your monitors' white balance according to your position on the planet...
I had some problems with Git and the file spec/fixtures/ČeskýÁČĎÉĚÍŇÓŘŠŤÚŮÝŽáčďéěíňóřšťúůýž. After pulling the latest commits, it would show that...
Capistrano 2 brings the shell command which allows you to run commands on your deployment targets. There is also invoke...
Exception notifications contain a lot of information: Backtraces, HTTP headers, etc. exception_notification tries its best to format this wall...
$RANDOM on bash returns a random integer between 0 and 32767. echo $RANDOM 9816 echo $RANDOM 30922
Using CSS sprites for background images is a technique for optimizing page load time by combining smaller images into a...
Next time you have to do more than trivial CSS changes on a project, you probably want to have live...
Connect to your memcached host. (AWS elasticache is memcached) telnet foohost23.cs2631.0001.euw1.cache.amazonaws.com 11211 Once you're connected, find out which 'slabs...
1. Saving files to a directory that is not shared between deploys or servers If you save your uploads to...
Here is a good explanation for zombie processes. Quote: If you have zombie processes it means those zombies have not...