Remove string allocation in def_{instance,single}_delegators

Author: jeremyevans

lib/forwardable.rb

@@ -149,7 +149,7 @@ def instance_delegate(hash)
   #
   def def_instance_delegators(accessor, *methods)
     methods.each do |method|
-      next if method.to_s == "__send__" || method.to_s == "__id__"
+      next if /\A__(?:send|id)__\z/ =~ method
       def_instance_delegator(accessor, method)
     end
   end
@@ -280,7 +280,7 @@ def single_delegate(hash)
   #
   def def_single_delegators(accessor, *methods)
     methods.each do |method|
-      next if method.to_s == "__send__" || method.to_s == "__id__"
+      next if /\A__(?:send|id)__\z/ =~ method
       def_single_delegator(accessor, method)
     end
   end