ruby-list

たけ(tk)です。

[ruby-list:38723] 多重配列のコンストラクタ ← 多重配列 にて 
Take_tk <ggb03124@nifty.ne.jp> さん 曰く:
> class Array
> def self.new2(arr,d=nil,args=[],&block)
>   arr = arr.dup
>   n = arr.shift
>   return Array.new(n){|x| self.new2(arr,d,args+[x],&block) } unless arr.empty?
>   return Array.new(n){|x| block.call(*(args+[x]))} unless d
>   return Array.new(n,d) unless block
>   raise(ArgumentError,"block with default")
> end
> end

順番が逆でした。↑のままだとデフォルトもブロックもない場合にエラーになっ
てしまう。

class Array
def self.new2(arr,d=nil,args=[],&block)
  arr = arr.dup
  n = arr.shift
  return Array.new(n){|x| self.new2(arr,d,args+[x],&block) } unless arr.empty?
  return Array.new(n,d) unless block
  return Array.new(n){|x| block.call(*(args+[x]))} unless d
  raise(ArgumentError,"block with default")
end
end

take_tk = kumagai hidetake

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[#38716] 多重配列 — Teppei <te-uno@...>

[#38724] 祝日判定用メソッド — Take_tk <ggb03124@...>

[#38731] 割り算で答えの整数部分だけを取り出す方法 — "S.Nobuhiro" <s-nob@...>

[#38745] [ANN] Exerb 3.0.0-preview2 — Yuya Kato <yuya-ml@4th.to>

[#38747] [1.8.1p2] ''リテラルの行末エスケープ — "Shirai,Kaoru" <shirai@...>

[#38752] [Win32] mswin32 で rb_warn() — Masahiro Kawata <mas@...>

[#38756] ruby-dev summary 21730-21822 /draft — Minero Aoki <aamine@...>

[#38765] RUBYOPT & __FILE__ — rubikitch <rubikitch@...>

[#38777] [ANN] let me see... 1.1 リリース — Kazuhiko <kazuhiko@...>

[#38778] ruby-dev summary 21833-21882 /draft — Kazuo Saito <ksaito@...>

[#38781] convert EBCDIC to SJIS — "T.Fukagawa" <tfukaga@...01.gate01.com>

[#38787] sjis正規表現エラー＠二重打ちチェック — Naohiko Barada <naob@...>

[#38794] How to trap widget command in Ruby/Tk — Tomoyuki Kosimizu <greentea@...2.so-net.ne.jp>

[#38796] net/http set_debug_output — "NAKAMURA, Hiroshi" <nakahiro@...>

[#38802] 1.8.1 for mswin32 — take_tk <ggb03124@...>

[#38806] ruby-dev summary 21883-21927 — Takaaki Tateishi <ttate@...>

[#38807] [ANN] Ruby-GNOME2-0.8.0 — Masao Mutoh <mutoh@...>

[#38810] バックトレースの表示指定 — "U.Nakamura" <usa@...>

[#38814] new with module — "NAKAMURA, Hiroshi" <nakahiro@...>

[#38821] [ANN] Exerb 3.0.0-preview3 — Yuya Kato <yuya-ml@4th.to>

[#38822] [ANN] Exerb 3.0.0-preview3 — Yamamoto Dan <dango@...>

[#38829] Fw: [RubyBook:2402] 新刊（特選） 宣伝させてください — ズボラスビッチ <masao-k@...>

[#38830] オブジェクトを確実に廃棄する方法はありますか？ — Take_tk <ggb03124@...>

[#38832] [ANN] Exerb 3.0.0-preview4 — Yuya Kato <yuya-ml@4th.to>

[#38833] [ANN] Ruby-GNOME2-0.8.1 — Masao Mutoh <mutoh@...>

[#38834] LDOCE4 script gets Segmentation fault on Windows — sheepman <sheepman@...>

[#38836] ruby1.8.1pr2のファイルアップロード — Kishimoto Toshio <toshio@...>

[#38838] ruby-dev summary: 21928-22011 — Masayoshi Takahashi <maki@...>

[#38840] SJISのString.count — AOKI Yoshihiro <aoki@...>

[#38846] Ruby/SDLでのMP3再生 — Yamamoto Dan <dango@...>

[#38848] [ANN] Web Publisher 0.5.4 — Narushima Hironori <hironori@...>

[#38849] [ANN] Exerb 3.0.0-preview5 — Yuya Kato <yuya-ml@4th.to>

[ruby-list:38730] Re: 多重配列のコンストラクタ ← 多重配列

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[#38765] RUBYOPT & FILE — rubikitch <rubikitch@...>

[#38829] Fw: [RubyBook:2402] 新刊（特選）宣伝させてください — ズボラスビッチ <masao-k@...>