arjunghosh/dup_derp

Forked from al3x/dup_derp

Created October 19, 2009 23:18

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	$ irb
	>> 1.class
	=> Fixnum
	>> 1.respond_to?(:dup)
	=> true
	>> 1.dup
	TypeError: can't dup Fixnum
	from (irb):3:in `dup'
	from (irb):3

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