From: Tanaka Akira <akr@...17n.org>
Date: 2002-07-18T12:20:00+09:00
Subject: [ruby-dev:17707] Re: self in block

In article <20020718.115142.74757422.GEC01122@nifty.ne.jp>,
  masaki <GEC01122@nifty.ne.jp> writes:

> Fact=Sequence.new([1]){<n> n*self[n-1]}
> 
> $B$N(B self $B$,(B Fact $B$r;X$7$F$/$l$J$$$H:$$j$^$9!#(B

define_method $B$r;H$C$F(B Fact $B$K%V%m%C%/$r%a%=%C%I$H$7$F?"$(IU$1$F$7$^$((B
$B$P$$$$$N$G$O(B?

class Sequence
  def initialize(list=[],*parameter)
    @list=list
    @para=parameter
    class << self
      define_method(:call, lambda)
    end
  end

  def [](n)
    @list[n] || @list[n]=call(n)
  end
end

Fact=Sequence.new([1]){|n| n*self[n-1]}
-- 
[$BEDCf(B $BE/(B][$B$?$J$+(B $B$"$-$i(B][Tanaka Akira]
$B!V$U$($m(B! $B$o$+$a$A$c$s:n@o$G$9$(C"=$B!W(B(Little Worker, $B7KM7@84](B)