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April 2024

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[ruby-dev:52069] [Ruby master Bug#20311] Struct.new("A") memory leak?
by MaxLap (Maxime Lapointe) 07 Jul '24

07 Jul '24

Issue #20311 has been reported by MaxLap (Maxime Lapointe). ---------------------------------------- Bug #20311: Struct.new("A") memory leak? https://bugs.ruby-lang.org/issues/20311 * Author: MaxLap (Maxime Lapointe) * Status: Open * ruby -v: 3.3.0 * Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN ---------------------------------------- The following code gives the impression of a memory leak. ``` 10.times do 5000.times do Struct.new("A") Struct.send(:remove_const, :A) end GC.start puts `ps -o rss= -p #{$$}`.to_i end ``` ``` 27868 35324 43400 51472 58676 66144 73764 81196 88512 95752 ``` Is there another location where the struct gets set that I need to clear up for the GC free the memory? Happens in 3.2.2, 3.2.3, 3.3.0, 3.3-head, ruby-head. -- https://bugs.ruby-lang.org/

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[ruby-dev:52084] [Ruby master Feature#5133] Array#unzip as an alias of Array#transpose
by matz (Yukihiro Matsumoto) 16 Apr '24

16 Apr '24

Issue #5133 has been updated by matz (Yukihiro Matsumoto). Status changed from Assigned to Rejected `unzip` is not really intuitive with Ruby's OO design. Unlike Haskell, Ruby does not have static type issues. Matz. ---------------------------------------- Feature #5133: Array#unzip as an alias of Array#transpose https://bugs.ruby-lang.org/issues/5133#change-107939 * Author: mrkn (Kenta Murata) * Status: Rejected * Assignee: mrkn (Kenta Murata) ---------------------------------------- Array#zip の逆は Array#transpose なんですけど、この対応関係が非常に分かり難いなと思いました。 Haskell には zip の逆をやる関数として unzip が用意されています。 unzip という名前は、「zip の逆をやりたい」と思ったときに (transpose よりは) 思い付きやすい名前だと思います。ということで Array#unzip を Array#transpose のエイリアスとして導入してはどうでしょう？以下パッチです: diff --git a/array.c b/array.c index 8caad66..dc411b7 100644 --- a/array.c +++ b/array.c @@ -4720,6 +4720,7 @@ Init_Array(void) rb_define_method(rb_cArray, "reject!", rb_ary_reject_bang, 0); rb_define_method(rb_cArray, "zip", rb_ary_zip, -1); rb_define_method(rb_cArray, "transpose", rb_ary_transpose, 0); + rb_define_alias(rb_cArray, "unzip", "transpose"); rb_define_method(rb_cArray, "replace", rb_ary_replace, 1); rb_define_method(rb_cArray, "clear", rb_ary_clear, 0); rb_define_method(rb_cArray, "fill", rb_ary_fill, -1); -- https://bugs.ruby-lang.org/

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