From: "naruse (Yui NARUSE)" Date: 2012-03-30T17:55:34+09:00 Subject: [ruby-core:43934] [ruby-trunk - Feature #6225] Hash#+ Issue #6225 has been updated by naruse (Yui NARUSE). shyouhei (Shyouhei Urabe) wrote: > Anyway there has been a long discussion around +s in programming languages. For instance Perl uses dot to concatenate strings and avoid +s to concatename strings and/or arrays. I see they are much more mature than us in this area. Functional languages like Haskell also avoid defining + onto non-abelian groups. On Perl, it is because for perl -e'print "1" + "2"' #=> 3 perl -e'print "1" . "2"' #=> 12 Not because of symmetry. ---------------------------------------- Feature #6225: Hash#+ https://bugs.ruby-lang.org/issues/6225#change-25459 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/