From: Arthur Gunn <redmine@...>
Date: 2011-01-14T15:49:25+09:00
Subject: [ruby-core:34492] [Ruby 1.9-Feature#4247] New features for Array#sample, Array#choice

Issue #4247 has been updated by Arthur Gunn.


Like Benoit said, Array#choice does sound like it would return only one element, I very much like the proposal of:

  p [1, 2, 3].sample(5, repeat: true)  #=> [2, 2, 3, 1, 3]

I don't think the distinction between #sample and #samples is obvious enough, the naming suggests #sample would return one element, and #samples many, not that the latter is an iterator.

#each_sample is a little ugly, but much more self-explanatory I think.
How important is it to have something like #each_sample though? Personally, I would probably always do something like this:

  [1, 2, 3, 4, 5].sample(3).each { |n| puts n }
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http://redmine.ruby-lang.org/issues/show/4247

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