27 Jun '15, 3pm

StackOverflow showing their support.

I find myself repeatedly looking for a clear definition of the differences of nil? , blank? , and empty? in Ruby on Rails. Here's the closest I've come: blank? objects are false, empty, or a whitespace string. For example, "" , " " , nil , [] , and {} are blank. nil? objects are instances of NilClass. empty? objects are class-specific, and the definition varies from class to class. A string is empty if it has no characters, and an array is empty if it contains no items. Is there anything missing, or a tighter comparison that can be made?

Full article: http://stackoverflow.com/questions/885414/a-concise-expla...

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