From: "alexeymuranov (Alexey Muranov)" <redmine@...>
Date: 2013-05-18T17:21:55+09:00
Subject: [ruby-core:55047] [ruby-trunk - Feature #6721] Object#yield_self


Issue #6721 has been updated by alexeymuranov (Alexey Muranov).


=begin
It seems that Haskell does not have it: http://stackoverflow.com/questions/4090168/is-there-an-inverse-of-the-haskell-operator

I have found that in the context of Church numerals in lambda calculus, the expression (({��m.��n.nm})) is called (({exp})): http://en.wikipedia.org/wiki/Church_encoding#Computation_with_Church_numerals .
One more reason to use the (({^})) operator as i have suggested :).

This operation also would roughly correspond to (({apply})) in Scheme with reverse order of arguments.  If i understand correctly, the (({apply})) in Scheme roughly correspond to (({call})) in Ruby, so maybe (({reverse_call}))? 
=end

----------------------------------------
Feature #6721: Object#yield_self
https://bugs.ruby-lang.org/issues/6721#change-39418

Author: alexeymuranov (Alexey Muranov)
Status: Open
Priority: Normal
Assignee: matz (Yukihiro Matsumoto)
Category: core
Target version: next minor


=begin
I think the following method is missing from Ruby:

 class Object
   def yield_self(*args)
     yield(self, *args)
   end
 end

I do not know a good use case, but it looks very natural to me.  It can be used in method chains.

What do you think?  Is there an alternative?
=end



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