Issue #7796 has been reported by alexeymuranov (Alexey Muranov). ---------------------------------------- Feature #7796: Hash#keys should return a set https://bugs.ruby-lang.org/issues/7796 Author: alexeymuranov (Alexey Muranov) Status: Open Priority: Normal Assignee: Category: core Target version: Next Major =begin In my opinion, (({Hash#keys})) should return an instance of (({Set})). =end -- http://bugs.ruby-lang.org/