From: "Radosław Bułat" <redmine@...>
Date: 2009-02-01T11:11:26+09:00
Subject: [ruby-core:21709] [Feature #1084] request for: Array#sort_by!

Feature #1084: request for: Array#sort_by!
http://redmine.ruby-lang.org/issues/show/1084

Author: Rados��aw Bu��at
Status: Open, Priority: Normal

$ ruby1.9.1 -e "p Array.instance_methods.grep /sort/"
[:sort, :sort!, :sort_by]

sort and sort! override it's version from Enumerable and sort_by is directly from Enumerable, but for symmetry and consistency it would be nice to have destructive sort_by! for Array.

For example:
a = [1,2,3]
a.sort_by! {|e| -e }
p a #=> [3, 2, 1]


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