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nassredean/RubyMetaprogrammingByExampleEx1.rb

Created December 16, 2015 15:28
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RubyMetaprogrammingByExampleEx1.rb
[1, 2, 3].to_s
=> "[1, 2, 3, 4]"
class Array
def to_s
'[]'
end
end
[1, 2, 3].to_s
=> "[]"
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