From: "knu (Akinori MUSHA)" <knu@...>
Date: 2012-11-29T17:12:46+09:00
Subject: [ruby-core:50305] [ruby-trunk - Feature #6670] str.chars.last should be possible


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

Assignee changed from yhara (Yutaka HARA) to matz (Yukihiro Matsumoto)

We don't have much time left before 2.0 to decide how to change IO#lines, #chars, etc. .
Can we deprecate them for now as a first step as proposed above?
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Feature #6670: str.chars.last should be possible
https://bugs.ruby-lang.org/issues/6670#change-34129

Author: yhara (Yutaka HARA)
Status: Assigned
Priority: Normal
Assignee: matz (Yukihiro Matsumoto)
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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