Method: Enumerable#group_by

Defined in:
lib/ole/support.rb

#group_by ⇒ Object

1.9 backport



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# File 'lib/ole/support.rb', line 40

def group_by
  hash = Hash.new { |h, key| h[key] = [] }
  each { |item| hash[yield(item)] << item }
  hash
end