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at-longhoang/gist:02bc10e7ff39a8f6cd4a

Created March 14, 2016 08:40
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gistfile1.txt
a = [ "a", "b", "c", "d" ]
p a.map{|x| x + "!" }
p a
a = [ "a", "b", "c", "d" ]
p a.map!{|x| x + "!" }
p a
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