ruby-dev

けいじゅ＠日本ラショナルです.

In [ruby-dev :00058 ] the message: "[ruby-dev:58] Re: Nil is a
subclass of Object? ", on Aug/06 14:12(JST) matz@netlab.co.jp
(Yukihiro Matsumoto) writes:

>|つまり, クラスnil/TRUE/FALSEの唯一のインスタンスが自分自身なんですね. 
>
>それも現在の実装ではつらいですね．nil,FALSE,TRUEとクラスはそ
>れぞれ違った構造を持つオブジェクトですから，そういうつくりに
>するのはかなり大規模な変更が必要です．

ヨタ話だったということで忘れて下さい(__;;;

>さらにnilはnilですから，クラスであるというのも変な気がします．
>TRUE,FALSEも同様．

たしか, CLOSはそんな構造だったような... nilのクラスはtじゃなかったっけ?

>|ところで, ruby-1.1では, 特異クラスは見えるようになるんですか? そこまで
>|はしない?
>
>私の手元にある1.1では見えています(隠すことを考えていなかった)．
>でも，見せない方が良いのかなあ．

class << obj では, 直接見えているという感じでもないですが, アクセスで
きることには変わりありませんし, さらに, [ruby-list:3608]の例もあります
し, 見せちゃってもいいんじゃないでしょうか?

nil, FALSE, TRUEの話しに戻りますが, Objectクラスの特異オブジェクトとい
う実装は無理ですか? そうすると, 名前なしクラスにできますし...
__
..........................................石塚 圭樹＠日本ラショナル...
----------------------------------->> e-mail: keiju@bc.mbn.or.jp <<---

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[#34] [Bug] Class#superclass — shugo@... (maeda shugo)

[#47] Re: Module#attr specification (Re: boolean values) — WATANABE Hirofumi <watanabe@...>

[#49] Re: Nil is a subclass of Object? — shugo@... (maeda shugo)

[#50] Re: [ruby-list:3596] Module#attr specification (Re: boolean values) — keiju@... (石塚圭樹 )

[#53] About C struct who has references to ruby objects — shugo@... (maeda shugo)

[#58] Re: Nil is a subclass of Object? — matz@... (Yukihiro Matsumoto)

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[#97] Re: meta programming features — matz@... (Yukihiro Matsumoto)

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[#101] tail recursion (Re: LaTeX ruby documents) — matz@... (Yukihiro Matsumoto)

[#102] Re: meta programming features — matz@... (Yukihiro Matsumoto)

[#103] Re: tail recursion (Re: LaTeX ruby documents) — keiju@... (石塚圭樹 )

[#104] Re: meta programming features — keiju@... (石塚圭樹 )

[#105] Re: meta programming features — matz@... (Yukihiro Matsumoto)

[#106] Re: tail recursion (Re: LaTeX ruby documents) — matz@... (Yukihiro Matsumoto)

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[#108] Re: meta programming features — keiju@... (Keiju ISHITSUKA)

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[#113] Re: [!?] local variable and accessor — matz@... (Yukihiro Matsumoto)

[#114] Re: meta programming features — matz@... (Yukihiro Matsumoto)

[#115] Re: meta programming features — WATANABE Hirofumi <watanabe@...>

[#116] Re: meta programming features — matz@... (Yukihiro Matsumoto)

[#117] Re: tail recursion (Re: LaTeX ruby documents) — keiju@... (石塚圭樹 )

[#118] Re: [!?] local variable and accessor — keiju@... (石塚圭樹 )

[#121] Re: meta programming features — keiju@... (石塚圭樹 )

[#123] ruby 1.1 alpha0 released — matz@... (Yukihiro Matsumoto)

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[#178] ruby 1.1 alpha1 released — matz@... (Yukihiro Matsumoto)

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[#181] Class#eval [Re: ftplib.rb revision 1.4] — keiju@... (石塚圭樹 )

[#185] Re: [ruby-list:3720] Re: Class#eval [Re: ftplib.rb revision 1.4] — keiju@... (石塚圭樹 )

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[#288] ruby 1.1 alpha3 released — matz@... (Yukihiro Matsumoto)

[#291] illegal here document — shugo@... (前田 修吾 / maeda shugo)

[#309] [BUG] method index — keiju@... (Keiju ISHITSUKA)

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[ruby-dev:75] Re: Nil is a subclass of Object?

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[#167] argument default value — shugo@... (前田修吾 / maeda shugo)

[#272] [Bug] default argument value — shugo@... (前田修吾 / maeda shugo)

[#291] illegal here document — shugo@... (前田修吾 / maeda shugo)