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redsquirrel/gist:9778a9523317261349af

Created April 4, 2015 19:22
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gistfile1.txt
redsquirrel:~ davehoover$ irb
2.0.0-p451 :001 > a = ['foo']
=> ["foo"]
2.0.0-p451 :002 > b = a
=> ["foo"]
2.0.0-p451 :003 > b += ['bar']
=> ["foo", "bar"]
2.0.0-p451 :004 > a
=> ["foo"]
2.0.0-p451 :005 >
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