This card describes how to pass an array with multiple element to a JavaScript function, so that the first array...
In whenever you can schedule Ruby code directly like so: every 1.day, :at => '4:30 am' do runner "MyModel.task_to...
Provides a value container that guarantees atomic updates to this value in a multi-threaded Ruby program. Originally linked to...
Since Ruby 2.1, defining a method returns its name as a Symbol: def foo() end # => :foo define_method :foo do...
"Keyword arguments" allow naming method arguments (optionally setting a default value). By using the double-splat operator, you can collect...
Now supports Rails 4.1 and Ruby 2.1.
assignable_values now supports Rails 4.1 and Ruby 2.1.0.
Travis CI is a free continuous integration testing service. However, it is really fragile and will break more than it...
When you tell rbenv to install a Ruby it does not know about, you will get an error message.
EdgeRider 0.3.0 adds support for Rails 4.1 and Ruby 2.1. It forward-ports ActiveRecord::Base.scoped to Rails 4.1.
When you have a string containing umlauts which don't behave as expected (are not matched with a regexp, can...
So you want your Ruby script to install missing gems instead of dying? Take this method: def installing_missing_gems...
If you parse this Yaml ... yes: 'Totally' no: 'Nope' ... you get this Ruby hash: { true: 'Totally', false: 'Nope' }
You are probably using Ruby 1.8.7 with a too recent versions of Rubygems. Downgrade your Rubygems to the latest version...
There are 3 built-in file descriptors: stdin, stdout and stderr (std=standard). (You can define your own, see the...
Create, or edit your ~/.irbrc file to include: require 'irb/ext/eval_history' # was 'irb/ext/save-history' for versions prior to Ruby 3.3 IRB.conf[:SAVE...
Spring is a Rails application preloader. When debugging e.g. the rails gem, you'll be wondering why your raise, puts...
docopt helps you define interface for your command-line app, and automatically generate parser for it. docopt is based on...
If you want to label things with a color but don't actually care which cholor, you can use the...
If you want to do JavaScript-style camelization, ActiveSupport's String#camelize method can actually help you out. Simply pass...
When using TextMate2 with the cucumber bundle, it does not recognize step definitions (e.g. custom_steps.rb) as such but believes they...
Splitting a long method into sub methods is easier in instances since it is in classes. Since...
Ruby’s model for concurrency is based on threads. It was typical approach for object oriented languages, designed in the...
Batman is an alternative Javascript MVC with a similar flavor as AngularJS, but a lot less features and geared towards...