Guides to the core and standard libraries, as well as selected Rubygems.
Category: APIs and Libraries
Episode #478: Combination
Understand when and how to use Ruby's array combination methods.
Episode #476: Group By
Grouping data by various properties is easy in Ruby, and there are more uses for it than you might think...
Episode #470: Binary Mode
Understand once and for all how, when, and why to open files in binary mode.
Episode #435: Date Math
Calculating dates in the past or future, without the assistance of ActiveSupport.