Contents

#taken from rails, will be in Ruby 1.9
module Enumerable
  def group_by
    inject({}) do |groups, element|
      (groups[yield(element)] ||= []) << element
      groups
    end
  end
end

Version data entries

8 entries across 8 versions & 1 rubygems

Version	Path
mspire-0.4.9	lib/group_by.rb
mspire-0.3.0	lib/group_by.rb
mspire-0.3.9	lib/group_by.rb
mspire-0.3.1	lib/group_by.rb
mspire-0.4.4	lib/group_by.rb
mspire-0.4.2	lib/group_by.rb
mspire-0.4.5	lib/group_by.rb
mspire-0.4.7	lib/group_by.rb