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Arrays in ruby

This Rubyology screencast demonstrates tips and tricks of using arrays or hashes in Ruby.
group_by Month

Learn how to use the very useful group_by method to group an array by anything you want! In this episode I group an array of tasks by month then sort i...

PHP Arrays

An array in PHP is actually an ordered map. A map is a type that maps values to keys. This type is optimized in several ways, so you can use it as a real array, or a list (vector), hashtable (which is an implementation of a map), dictionary, collection, stack, queue and probably more. Because you can...