lib/hamster/experimental/mutable_set.rb in hamster-0.4.3 vs lib/hamster/experimental/mutable_set.rb in hamster-1.0.0

@@ -1,46 +1,39 @@
-require 'forwardable'
-require 'hamster/set'
-require 'hamster/experimental/read_copy_update'
+require "hamster/set"
+require "hamster/read_copy_update"
 
 module Hamster
-
   def self.mutable_set(*items)
     MutableSet.new(set(*items))
   end
 
   class MutableSet
-
-    extend Forwardable
-
     include ReadCopyUpdate
 
     def add(item)
       transform { |set| set.add(item) }
     end
-    def_delegator :self, :add, :<<
+    alias :<< :add
 
     def add?(item)
       added = false
-      transform { |set|
+      transform do |set|
         added = !set.include?(item)
         set.add(item)
-      }
+      end
       added
     end
 
     def delete(item)
       transform { |set| set.delete(item) }
     end
 
     def delete?(item)
       deleted = false
-      transform { |set|
+      transform do |set|
         deleted = set.include?(item)
         set.delete(item)
-      }
+      end
       deleted
     end
-
   end
-
 end