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push

Perl 5 version 14.0 documentation
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push

Perl functions A-Z | Perl functions by category | The 'perlfunc' manpage
  • push ARRAY,LIST

  • push EXPR,LIST

    Treats ARRAY as a stack, and pushes the values of LIST onto the end of ARRAY. The length of ARRAY increases by the length of LIST. Has the same effect as

    1.     for $value (LIST) {
    2.         $ARRAY[++$#ARRAY] = $value;
    3.     }

    but is more efficient. Returns the number of elements in the array following the completed push.

    Starting with Perl 5.14, push can take a scalar EXPR, which must hold a reference to an unblessed array. The argument will be dereferenced automatically. This aspect of push is considered highly experimental. The exact behaviour may change in a future version of Perl.