pop

pop ARRAY

pop

Pops and returns the last value of the array, shortening the array by one element. Has an effect similar to

$ARRAY[$#ARRAY--]

If there are no elements in the array, returns the undefined value (although this may happen at other times as well). If ARRAY is omitted, pops the @ARGV array in the main program, and the @_ array in subroutines, just like shift.

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