pop

pop @array

• Treats an array like a stack, popping and returning the last value of the array, shortening the array by one element. If array is omitted, the function pops @ARGV (in the main program), or @_ (in subroutines).

  If there are no elements in the array, pop returns the undefined value. See also push and shift. If you want to pop more than one element, use splice.