From: "vjoel (Joel VanderWerf)" <vjoel@...>
Date: 2013-06-25T07:46:20+09:00
Subject: [ruby-core:55640] [ruby-trunk - Feature #6373] public #self


Issue #6373 has been updated by vjoel (Joel VanderWerf).


=begin
Another argument against #identity: it is used by several libraries for something completely different. For example, in narray:

 >> NMatrix.float(2,2).identity
 => NMatrixfloat2,2: 
 [ [ 1.0, 0.0 ], 
   [ 0.0, 1.0 ] ]
 
It's also used in celluloid-zmq:

 s1 = PubSocket.new
 s1.identity = "publisher-A"

I vote for "itself" or "self", which are unlikely to be defined anywhere with some fundamentally different meaning.

=end

----------------------------------------
Feature #6373: public #self
https://bugs.ruby-lang.org/issues/6373#change-40124

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


=begin
This was recently suggested to me as an extension:

  class Object
    # An identity method that provides access to an object's 'self'.
    #
    # Example:
    #   [1,2,3,4,5,1,2,2,3].group_by(&:identity)
    #   #=> {1=>[1, 1], 2=>[2, 2, 2], 3=>[3, 3], 4=>[4], 5=>[5]}
    #
    def identity
      self
    end
  end

First, is such a method commonly useful enough to warrant existence?

Second, it makes me wonder if #self should be a public method in general.
=end


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