From: Tanaka Akira <akr@...>
Date: 2008-05-22T23:48:22+09:00
Subject: [ruby-dev:34807] 1.step(3, SimpleDelegator.new(Rational(1,2))

1.step(3, Rational(1,2)) が例外にならないのに
1.step(3, SimpleDelegator.new(Rational(1,2))) が例外になるの
は変ではないでしょうか。

% ./ruby -v -rdelegate -e '1.step(3, SimpleDelegator.new(Rational(1,2))) {|x| p x }' 
ruby 1.9.0 (2008-05-22 revision 16533) [i686-linux]
/home/akr/ruby/yarvo0/lib/ruby/1.9.0/delegate.rb:225: warning: instance variable @delegate_sd_obj not initialized
1
Rational(3, 2)
-e:1:in `+': SimpleDelegator can't be coerced into Rational (TypeError)
        from -e:1:in `step'
        from -e:1:in `<main>'

% ./ruby -v -e '1.step(3, Rational(1,2)) {|x| p x }'                    
ruby 1.9.0 (2008-05-22 revision 16533) [i686-linux]
1
Rational(3, 2)
Rational(2, 1)
Rational(5, 2)
Rational(3, 1)

-- 
[田中 哲][たなか あきら][Tanaka Akira]