From: "akr (Akira Tanaka)" <akr@...>
Date: 2012-03-25T17:03:22+09:00
Subject: [ruby-core:43654] [ruby-trunk - Feature #5044] #zip with block return mapped results


Issue #5044 has been updated by akr (Akira Tanaka).


Currently it can be implemented as follows.

  % ruby -e 'p [1,2,3].zip([1,2,3]).map {|a,b| a + b }'
  [2, 4, 6]
  % ruby -e 'p [1,2,3].lazy.zip([1,2,3]).map {|a,b| a + b }.to_a'
  [2, 4, 6]

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Feature #5044: #zip with block return mapped results
https://bugs.ruby-lang.org/issues/5044#change-25152

Author: trans (Thomas Sawyer)
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 


Is there any reason that #zip doesn't return results like map?

  [1,2,3].zip([1,2,3]){ |a,b| a + b }  #=> [2,4,6]

Currently, it just returns nil, which seems rather contrary to the return result of the non-block form.



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