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array/pop



    cfunction

    (array/pop arr)
    
    Remove the last element of the array and return it. If the array is
    empty, will return nil. Modifies the input array.

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(def a @[1 2])
(array/pop a)  # => 2
a              # => @[1]
(array/pop a)  # => 1
a              # => @[]
(array/pop a)  # => nil
a              # => @[]

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