From: "matz (Yukihiro Matsumoto)" Date: 2012-03-30T16:55:56+09:00 Subject: [ruby-core:43931] [ruby-trunk - Feature #6225] Hash#+ Issue #6225 has been updated by matz (Yukihiro Matsumoto). I myself do not care whether + to be symmetric or not. I care about key conflict. Since conflicting cause value lost, I am not positive about making + alias to #merge. Matz. ---------------------------------------- Feature #6225: Hash#+ https://bugs.ruby-lang.org/issues/6225#change-25456 Author: trans (Thomas Sawyer) Status: Assigned Priority: Normal Assignee: matz (Yukihiro Matsumoto) Category: core Target version: 2.0.0 Strings and Arrays can be combined with #+. I don't see any reason not to allow Hashes to do so as well. class Hash alias :+ :merge end -- http://bugs.ruby-lang.org/