[#114703] [Ruby master Bug#19875] Ruby 2.7 -> 3.1 Performance regression in String#count — "iz (Illia Zub) via ruby-core" <ruby-core@...>

Issue #19875 has been reported by iz (Illia Zub).

18 messages 2023/09/12

[#114774] [Ruby master Feature#19884] Make Safe Navigation Operator work on classes — "p8 (Petrik de Heus) via ruby-core" <ruby-core@...>

Issue #19884 has been reported by p8 (Petrik de Heus).

13 messages 2023/09/15

[#114796] [Ruby master Feature#19889] Let `Kernel.#require` search for files relative to the current working directory for non ./, ../ relative paths — "sawa (Tsuyoshi Sawada) via ruby-core" <ruby-core@...>

Issue #19889 has been reported by sawa (Tsuyoshi Sawada).

6 messages 2023/09/18

[#114803] [Ruby master Bug#19890] File#realine(chomp: true) slower/more allocations than readline.chomp! — "segiddins (Samuel Giddins) via ruby-core" <ruby-core@...>

Issue #19890 has been reported by segiddins (Samuel Giddins).

12 messages 2023/09/18

[#114817] [Ruby master Bug#19892] Build failure with 8f1b688177 — "vo.x (Vit Ondruch) via ruby-core" <ruby-core@...>

Issue #19892 has been reported by vo.x (Vit Ondruch).

8 messages 2023/09/19

[#114915] [Ruby master Feature#19905] Introduce `Queue#peek` — "hi@... (Joao Fernandes) via ruby-core" <ruby-core@...>

Issue #19905 has been reported by [email protected] (Joao Fernandes).

8 messages 2023/09/28

[ruby-core:114805] [Ruby master Feature#19839] Need a method to check if two ranges overlap

From: "shouichi (Shouichi Kamiya) via ruby-core" <ruby-core@...>
Date: 2023-09-19 00:31:38 UTC
List: ruby-core #114805
Issue #19839 has been updated by shouichi (Shouichi Kamiya).


Shouldn't `none?` handle empty ranges? Currently, it raises an error.

```
> (...-Float::INFINITY).none?
(irb):1:in `each': can't iterate from NilClass (TypeError)
```

If `none?` handles empty ranges, then `overlap?` can return false when one of the ranges is empty.

----------------------------------------
Feature #19839: Need a method to check if two ranges overlap
https://bugs.ruby-lang.org/issues/19839#change-104649

* Author: shouichi (Shouichi Kamiya)
* Status: Closed
* Priority: Normal
----------------------------------------
It would be convenient to have a method that checks if two ranges overlap. For example,

```
(0..10).overlap?(5..15) #=> true
(0..10).overlap?(20..30) #=> false
```



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