Perl 5 version 26.3 documentation


  • wantarray

    Returns true if the context of the currently executing subroutine or eval is looking for a list value. Returns false if the context is looking for a scalar. Returns the undefined value if the context is looking for no value (void context).

    1. return unless defined wantarray; # don't bother doing more
    2. my @a = complex_calculation();
    3. return wantarray ? @a : "@a";

    wantarray's result is unspecified in the top level of a file, in a BEGIN, UNITCHECK, CHECK, INIT or END block, or in a DESTROY method.

    This function should have been named wantlist() instead.