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Ruby 1.9のmodule_evalとブロック付きメソッド呼び出し - Blog by Sadayuki Furuhashi e$B$K=q$+$l$F$$$kLdBj$re(B
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module_eval.rb:
class Module
def my_module_eval(&block)
module_eval(&block)
end
end
class String
Integer.my_module_eval do
def hoge; end
end
end
p Integer.instance_methods(false).map{|m|m.to_sym}.include?(:hoge)
p String.instance_methods(false).map{|m|m.to_sym}.include?(:hoge)
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$ ruby -v module_eval.rb
ruby 1.8.6 (2007-09-24 patchlevel 111) [i686-darwin9.2.0]
true
false
$ ruby-trunk -v module_eval.rb
ruby 1.9.0 (2008-03-29 revision 0) [i686-darwin9.2.0]
false
true
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