Ruby Method of the Day - Array.pop

Posted by Kelly McCauley on Nov 09, 2007

Signature

array.pop   #=> object or nil

array.pop removes and returns the last object from array. nil is returned if array is empty (which is not a good test for an empty array since the last object of the array could itself be nil).

Examples

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stack = []
stack.pop           #=> nil
stack.push(1,2,3)   #=> [1, 2, 3]
stack.pop           #=> 3
stack               #=> [1, 2]
stack.push(nil)     #=> [1, 2, nil]
stack.pop           #=> nil

Documentation Reference

Ruby version 1.8.6

www.ruby-doc.org : Array.pop