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Serabe/gist:79512

Created March 15, 2009 19:25
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gistfile1.rb
class Module
VALID=[:optional, :rest_arg]
VALID.each do |x|
define_method x do
[self, x]
end
end
end
a = [Range, Fixnum.optional, String.rest_arg] #=> [Range, [Fixnum, :optional], [String, :rest_arg]]
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