Contents

# for versions of ruby < 1.8.7
module Enumerable
  def index_by
    inject({}) do |accum, elem|
      key = yield(elem)
      accum[key] ||= []
      accum[key] << elem
      accum
    end
  end
  
  def group_by #:yield:
    #h = k = e = nil
    r = Hash.new
    each{ |e| (r[yield(e)] ||= []) << e }
    r
  end  
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
cryx-g5k-0.2.10	lib/g5k/enumerable_extensions.rb
cryx-g5k-0.2.11	lib/g5k/enumerable_extensions.rb
cryx-g5k-0.2.8	lib/g5k/enumerable_extensions.rb
cryx-g5k-0.2.9	lib/g5k/enumerable_extensions.rb