Contents

class Array
  def group_by
    h = Hash.new

    each do |element|
      key = yield(element)
      if h.has_key?(key)
        h[key] << element
      else
        h[key] = [element]
      end
    end

    h.map{|k,v| v}
  end
end

Version data entries

3 entries across 3 versions & 3 rubygems

Version	Path
jonuts-garb-0.2.4	lib/extensions/array.rb
vigetlabs-garb-0.2.4	lib/extensions/array.rb
garb-0.2.4	lib/extensions/array.rb