lib/g5k/enumerable_extensions.rb in cryx-g5k-0.2.7 vs lib/g5k/enumerable_extensions.rb in cryx-g5k-0.2.8

@@ -1,9 +1,11 @@
 # for versions of ruby < 1.8.7
 module Enumerable
   def index_by
     inject({}) do |accum, elem|
-      accum[yield(elem)] = elem
+      key = yield(elem)
+      accum[key] ||= []
+      accum[key] << elem
       accum
     end
   end
   
   def group_by #:yield:
\ No newline at end of file