ruby/ruby — pull request #112 by regularlambda (2012-04-01 18:06:29+00:00)
Title: is_integer? method declaration in prelude, generally wanted from develop...

Dear Rubyists, can we add "is_integer?" method to our core for main purposes of checking integerITY?
I add it to "golf_prelude.rb" below of "to_a" stub.