From: Yusuke Endoh <redmine@...>
Date: 2010-03-03T01:16:53+09:00
Subject: [ruby-core:28424] [Feature #2515] Array#select!

Issue #2515 has been updated by Yusuke Endoh.


Hi,

2010/3/2 Marc-Andre Lafortune <redmine@ruby-lang.org>:
> I feel the name select! is as appropriate as map! , collect! and reject!

Some feel appropriate, and some inappropriate.
Seems like "he said she said" scenario.
Is there another reason than feeling and consistency (= orthogonality) ?

I'm almost neutral for the suggestion, but take a opposite point of view
for the discussion.  If I ignore Array#reject! and consider only the name
"select!", I can imagine the different behavior.  The name seems to me to
return an array whose elements meet condition, and removes the *selected*
elements from the original array, like Array#delete_at and #shift:

  ary = [1, 2, 3, 4, 5]
  p ary.select! {|x| x.even? } #=> [2, 4]
  p ary #=> [1, 3, 5]

-- 
Yusuke ENDOH <mame@tsg.ne.jp>
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