Implement Enumerable#to_set inside set.rb

opal · Oct 6, 2013 · 46d23f2 · 46d23f2
1 parent 006819e
commit 46d23f2
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Showing 3 changed files with 10 additions and 1 deletion.
diff --git a/spec/filters/bugs/set.rb b/spec/filters/bugs/set.rb
@@ -3,4 +3,6 @@
   fails "Set#== returns true when the passed Object is a Set and self and the Object contain the same elements"
   fails "Set#== does not depend on the order of nested Sets"
   fails "Set#merge raises an ArgumentError when passed a non-Enumerable"
+
+  fails "Emumerable#to_set allows passing an alternate class for Set"
 end
diff --git a/spec/rubyspecs b/spec/rubyspecs
@@ -227,6 +227,7 @@ library/set/member_spec
 library/set/merge_spec
 library/set/size_spec
 library/set/to_a_spec
+library/set/enumerable/to_set_spec
 core/kernel/comparison_spec
 core/matchdata/to_a_spec
 core/range/begin_spec

diff --git a/stdlib/set.rb b/stdlib/set.rb
@@ -80,4 +80,10 @@ def size
   def to_a
     @hash.keys
   end
-end
+end
+
+module Enumerable
+  def to_set(klass = Set, *args, &block)
+    klass.new(self, *args, &block)
+  end
+end