From: Jim Weirich <jim@...>
Date: 2004-12-08T11:52:03+09:00
Subject: Re: [rcr] String#split behaves odd

On Tuesday 07 December 2004 05:55 pm, Ryan Davis wrote:
> To weigh in, I think the behavior of split should necessarily be
> compared to splits in other languages, as long as our split acts in a
> consistent and well behaved way. [...]  Namely, anything
> split (with a constant string/pattern) should be able to be joined back
> to the original using that constant string. This is not currently the
> case in ruby:
>
> irb(main):008:0> %w( aabb bbaa ).map do |s| s.split(/a/).join('a') ==
> s; end
> => [true, false]

  %w( aabb bbaa ).map do |s| s.split(/a/,-1).join('a') == s; end
  # => [true, true]

Don't drop trailing splits.

-- 
-- Jim Weirich    jim@weirichhouse.org     http://onestepback.org
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"Beware of bugs in the above code; I have only proved it correct, 
not tried it." -- Donald Knuth (in a memo to Peter van Emde Boas)