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denisdefreyne/gist:1033394

Created June 18, 2011 18:50
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gistfile1.rb
array = [ 1, 2, 3 ]
array.hash
# => -239251530248082591
dict = {}
dict[array] = 123
array << 4
array.hash
# => -3202532316789943903
dict[array]
# => nil
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