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mariozig/double_pipes_equals.rb

Created February 3, 2013 03:17
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double_pipes_equals.rb
x = method_that_returned_nil() #=> nil
x ||= "default" #=> "default" : value of x is nil, so it will be replaced with "default"
x ||= "other" #=> "default" : value of x is "default" so it will stay "default" and NOT be set to "other"
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