From: "nagachika (Tomoyuki Chikanaga)" <nagachika00@...>
Date: 2012-11-24T22:18:01+09:00
Subject: [ruby-core:50039] [ruby-trunk - Feature #6670] str.chars.last should be possible


Issue #6670 has been updated by nagachika (Tomoyuki Chikanaga).

Assignee changed from nagachika (Tomoyuki Chikanaga) to knu (Akinori MUSHA)

Hello,
Sorry for late reply.

OK, I assign this ticket to knu san again.
Anyway I'm willing to review the patch :)

BTW, I cannot apply string_bytes_to_array.patch on trunk r37835.
----------------------------------------
Feature #6670: str.chars.last should be possible
https://bugs.ruby-lang.org/issues/6670#change-33816

Author: yhara (Yutaka HARA)
Status: Assigned
Priority: Normal
Assignee: knu (Akinori MUSHA)
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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