Today I needed to execute a ruby gem executable with sudo. But, surprisingly, bash would tell me command not found...
Although regular expression syntax is 99% interchangeable between languages, keep this in mind: By default, the dot character (".") does not...
You know that you can collect an array as groups using in_groups or in_groups_of. Maybe you want...
Whenever is a Ruby gem that provides a clear syntax for writing and deploying cron jobs.
Validations that need to access an associated object may lead to some trouble. Let's exemplify that using this example...
Ruby comes with a class BigDecimal which you can use for arbitrary precision arithmetic. You should use BigDecimal instead of...
When storing floating-point numbers such as prices or totals in an SQL database, always use a DECIMAL column. Never...
Sass now comes with user-defined functions, keyword arguments, list manipulation. Haml and Sass are now two separate gems.
A capybara driver that uses WebKit via QtWebKit.
Our new scope-based authorization gem for Ruby on Rails has been released. This might one day replace Aegis as...
Documentation for the horrible RDoc syntax.
Ruby gem to check whether a given bic/account-no-combination can possibly be valid for a German bank. Can also resolve German...
If you are using RVM on a Mac and cannot enter 8+ bit characters on an IRB or Rails console...
Since version 1.5 RubyGems requires at least Ruby 1.8.7. The last one working with Ruby 1.8.6 was RubyGems 1.4.2.
When installing RMagick you may get an error messages like this: Version 2.13.1: checking for Ruby version >= 1.8.5... yes
Artifice allows you to replace the Net::HTTP subsystem of Ruby with an equivalent that routes all requests to a...
Phillip Koebbe from Ruby on Rails suggested inserting following code between the "bootstrap" and "initialize" sections of enviroment.rb. This hack...
The information in this card is only relevant for Rails 2.3-era apps. This note gives a quick introduction into...
Note that you cannot currently use Ruby 1.9.2 with Rails 2 applications that use RSpec, so don't upgrade if...
List of global variables available to a Ruby script.
Specify these gem versions in your Gemfile: gem 'cucumber', '~> 1.3.0' gem 'cucumber-rails', '= 0.3.2' # max version for Rails 2
The shell variable PS1 holds your bash prompt. You might want to change it to serve your needs best. Here...
Now allows to list transition paths from and to arbitrary states.
Add deprecation warnings and their solution or link to available solutions. Global access to Rake DSL methods is deprecated. Please...