From: "masasakano (Masa Sakano)" <noreply@ruby-lang.org>
To: ruby-core@ruby-lang.org
Subject: [ruby-core:109770] [Ruby master Bug#18983] Range#size for beginless Range is not nil.
Date: Mon, 29 Aug 2022 14:10:12 +0000 (UTC) [thread overview]
Message-ID: <redmine.issue-18983.20220829141011.52465@ruby-lang.org> (raw)
In-Reply-To: redmine.issue-18983.20220829141011.52465@ruby-lang.org
Issue #18983 has been reported by masasakano (Masa Sakano).
----------------------------------------
Bug #18983: Range#size for beginless Range is not nil.
https://bugs.ruby-lang.org/issues/18983
* Author: masasakano (Masa Sakano)
* Status: Open
* Priority: Normal
* ruby -v: ruby 3.1.2p20 (2022-04-12 revision 4491bb740a) [x86_64-darwin20]
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------
`Range#size` should, according to [Official docs](https://ruby-doc.org/core-3.1.2/Range.html#method-i-size),
> Returns the count of elements in self if both begin and end values are numeric; otherwise, returns nil
but it doesn't with beginless non-Numeric Ranges (in Ruby-3.1.2 or earlier).
```ruby
(..?a).size # => Infinity
(nil..nil).size # => Infinity
```
whereas it certainly does with endless Ranges
```ruby
(?a..).size # => nil
```
---Files--------------------------------
bug-20220829-beginless_range.rb (1.24 KB)
--
https://bugs.ruby-lang.org/
next parent reply other threads:[~2022-08-29 14:10 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-29 14:10 masasakano (Masa Sakano) [this message]
2022-09-14 22:01 ` [ruby-core:109895] [Ruby master Bug#18983] Range#size for beginless Range is not nil thiagofm (Thiago Massa)
2022-09-14 22:18 ` [ruby-core:109896] " thiagofm (Thiago Massa)
2022-09-16 17:48 ` [ruby-core:109920] " jeremyevans0 (Jeremy Evans)
2022-10-20 4:32 ` [ruby-core:110428] " matz (Yukihiro Matsumoto)
2022-10-21 4:41 ` [ruby-core:110454] " mame (Yusuke Endoh)
2022-10-21 4:41 ` [ruby-core:110455] " mame (Yusuke Endoh)
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