From: "mame (Yusuke Endoh)" <noreply@...>
Date: 2021-12-07T00:16:29+00:00
Subject: [ruby-core:106525] [Ruby master Bug#18390] Enumerator::Lazy#find returns invalid value

Issue #18390 has been updated by mame (Yusuke Endoh).


Oh that's good to know. I see you have created a ticket for Opal: https://github.com/opal/opal/issues/2367 . Thank you for your report anyway!

----------------------------------------
Bug #18390: Enumerator::Lazy#find returns invalid value
https://bugs.ruby-lang.org/issues/18390#change-95186

* Author: cvss (Kirill Vechera)
* Status: Third Party's Issue
* Priority: Normal
* ruby -v: 3.0.2
* Backport: 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN
----------------------------------------
There is a regression bug in `#find`
```ruby
# RUBY_VERSION 3.0.2
[1, 2, 3, 4].lazy.find(&:even?) # => nil (ERROR!), expected 2
[1, 2, 3, 4].find(&:even?).find(&:even?) # => 2
# RUBY_VERSION 2.4.1
[1, 2, 3, 4].lazy.find(&:even?) # => 2
[1, 2, 3, 4].find(&:even?) # => 2
```



---Files--------------------------------
ruby_bug.png (8.8 KB)


-- 
https://bugs.ruby-lang.org/

Unsubscribe: <mailto:ruby-core-request@ruby-lang.org?subject=unsubscribe>
<http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>