lib/core/facets/array/combination.rb in facets-2.6.0 vs lib/core/facets/array/combination.rb in facets-2.7.0

@@ -1,9 +1,9 @@
-if RUBY_VERSION < '1.9'
+class Array
 
-  require 'enumerator'
+  unless method_defined?(:combination) # 1.8.7+
 
-  class Array
+    require 'facets/enumerator'
 
     # Yields the block to each unique combination of _n_ elements.
     #
     #   a = %w|a b c d|
     #   a.combination(3)