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From: "byroot (Jean Boussier)" <noreply@ruby-lang.org>
To: ruby-dev@ruby-lang.org
Subject: [ruby-dev:51158] [Ruby master Feature#18573] Object#pack1
Date: Tue, 08 Feb 2022 08:51:37 +0000 (UTC)	[thread overview]
Message-ID: <redmine.journal-96419.20220208085136.33140@ruby-lang.org> (raw)
In-Reply-To: <redmine.issue-18573.20220206163301.33140@ruby-lang.org>

Issue #18573 has been updated by byroot (Jean Boussier).


(using Google Translate to understand the discussion, sorry if I misunderstood or missed things).

Since `Object#pack1` might be deemed a bit too invasive, an alternative could be `String.pack1(format, arg)`, or even `String.pack(format, *args)`.

----------------------------------------
Feature #18573: Object#pack1
https://bugs.ruby-lang.org/issues/18573#change-96419

* Author: os (Shigeki OHARA)
* Status: Open
* Priority: Normal
----------------------------------------
# 概要

String#unpack1 の逆の Object#pack1 が欲しい。

# 背景

Array#pack というメソッドがありますが、レシーバーの Array の要素数が 1 つしかないことが良くあります。

``` ruby
[codepoint].pack('U')
[digest].pack('m0')
[mail_body].pack('M')
[ip_address].pack('N')
```

標準添付ライブラリーなどを眺めてみてもチラホラあるようです。

ですが、このようなケースで変換対象のオブジェクトをわざわざ Array でくるまなくてはいけないというのは面倒な気もします。

# 提案

String#unpack に対して String#unpack1 というメソッドがありますが、
Array#pack に対する Object#pack1 というメソッドを提案します。

イメージとしては以下のコードのような感じです。

``` ruby
class Object
  def pack1(template, option = {})
    [self].pack(template, **option)
  end
end
```

# 議論・課題

* Object で良いかどうかは議論の余地があろうかと思います
* メソッド名が pack1 で良いかはわかりませんが、他とかぶる可能性は低いかと思います




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

  parent reply	other threads:[~2022-02-08  8:51 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-06 16:33 [ruby-dev:51154] " os (Shigeki OHARA)
2022-02-07  2:49 ` [ruby-dev:51155] " knu (Akinori MUSHA)
2022-02-07  3:02 ` [ruby-dev:51156] " knu (Akinori MUSHA)
2022-02-07  3:19 ` [ruby-dev:51157] " knu (Akinori MUSHA)
2022-02-08  8:51 ` byroot (Jean Boussier) [this message]
2023-10-05 21:21 ` [ruby-dev:52050] " jeremyevans0 (Jeremy Evans) via ruby-dev
2023-10-06 14:12 ` [ruby-dev:52051] " Eregon (Benoit Daloze) via ruby-dev
2023-10-12  4:21 ` [ruby-dev:52052] " matz (Yukihiro Matsumoto) via ruby-dev
2023-10-12 19:11 ` [ruby-dev:52053] " tenderlovemaking (Aaron Patterson) via ruby-dev
2023-10-13 13:00 ` [ruby-dev:52054] " mame (Yusuke Endoh) via ruby-dev

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