Issue #6225 has been updated by alexch (Alex Chaffee).


Operator overloading is for convenience and to "least surprise". Since + puts two numbers together, and + puts two strings together, and + puts two arrays together, + should also put two hashes together -- in the way that makes the most sense for each type. 

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Feature #6225: Hash#+
https://bugs.ruby-lang.org/issues/6225#change-40969

Author: trans (SYSTEM ERROR)
Status: Assigned
Priority: Normal
Assignee: matz (Yukihiro Matsumoto)
Category: core
Target version: next minor


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



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