From: "alexeymuranov (Alexey Muranov)" Date: 2013-02-08T08:40:50+09:00 Subject: [ruby-core:52015] [ruby-trunk - Feature #7796] Hash#keys should return a set Issue #7796 has been updated by alexeymuranov (Alexey Muranov). About the core/lib issue, there is an open request about adding Set to the core: #5478. ---------------------------------------- Feature #7796: Hash#keys should return a set https://bugs.ruby-lang.org/issues/7796#change-36025 Author: alexeymuranov (Alexey Muranov) Status: Feedback 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/