[ruby-dev:51191] [Ruby master Bug#18953] `Array#uniq` doesn't evaluate the given block when the size of the array is one
From:
"nobu (Nobuyoshi Nakada)" <noreply@...>
Date:
2022-08-03 06:12:49 UTC
List:
ruby-dev #51191
Issue #18953 has been updated by nobu (Nobuyoshi Nakada).
I think this is an expected behavior, but an implementation detail.
----------------------------------------
Bug #18953: `Array#uniq` doesn't evaluate the given block when the size of the array is one
https://bugs.ruby-lang.org/issues/18953#change-98571
* Author: ttanimichi (Tsukuru Tanimichi)
* Status: Open
* Priority: Normal
* ruby -v: ruby 3.1.2p20 (2022-04-12 revision 4491bb740a) [arm64-darwin21]
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------
`Array#uniq` doesn't evaluate the given block when the size of the array is one. Is this expected behavior?
```
$ ruby -e '[42, 43].uniq { _1.foo }; puts true'
-e:1:in `block in <main>': undefined method `foo' for 42:Integer (NoMethodError)
[42, 43].uniq { _1.foo }; puts true
^^^^
Did you mean? floor
from -e:1:in `uniq'
from -e:1:in `<main>'
```
```
$ ruby -e '[42].uniq { _1.foo }; puts true'
true
```
--
https://bugs.ruby-lang.org/