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sugamasao/default_sample.rb

Created April 6, 2018 02:02
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default_sample.rb
irb(main):001:0> foo = {}
=> {}
irb(main):002:0> foo.default = "a"
=> "a"
irb(main):003:0> foo[:z]
=> "a"
irb(main):004:0> foo[:z].upcase!
=> "A"
irb(main):005:0> foo[:x]
=> "A"
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