From: "knu (Akinori MUSHA)" <knu@...>
Date: 2012-10-29T17:43:10+09:00
Subject: [ruby-core:48540] [ruby-trunk - Feature #6670] str.chars.last should be possible


Issue #6670 has been updated by knu (Akinori MUSHA).


If #lines is to become no longer an alias for #each_line, there should be no point in supporting lines {} any more.  It should emit a deprecation warning and get unsupported in the future.
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Feature #6670: str.chars.last should be possible
https://bugs.ruby-lang.org/issues/6670#change-31910

Author: yhara (Yutaka HARA)
Status: Assigned
Priority: Normal
Assignee: yhara (Yutaka HARA)
Category: core
Target version: 2.0.0


=begin
Since str.chars returns an Enumerator, we need explicit to_a for some operations:

  str.chars.to_a.last
  str.chars.to_a[1,3]

But often I forget that and write:

  str.chars.last
  str.chars[1,3]

Besides that, I feel it is hard to explain why to_a is needed here when I'm writing
artilcles for Ruby beginners. 

Simplest way to achieve this is to make String#chars (also #lines, #bytes and #codepoints)
return an Array. Since arrays have most of the methods defined in Enumerator, this will 
not be a big change. For programs like str.chars.next, you can use each_char instead.
=end



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