From: "marcandre (Marc-Andre Lafortune)" Date: 2012-11-27T08:15:44+09:00 Subject: [ruby-core:50184] [ruby-trunk - Feature #6670] str.chars.last should be possible Issue #6670 has been updated by marcandre (Marc-Andre Lafortune). #size will return `nil` for all enumerators based on IO. Maybe the best is to have `chars` return an array for strings and deprecate it with a warning for IO. ---------------------------------------- Feature #6670: str.chars.last should be possible https://bugs.ruby-lang.org/issues/6670#change-33989 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 -- http://bugs.ruby-lang.org/