Created
February 3, 2013 03:17
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a double pipe equals example used in: http://ruby.zigzo.com/2013/02/01/wat-double-pipes-equals-in-ruby/
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| 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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