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wantarray

Perl 5 version 22.0 documentation

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wantarray

  • 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.

 
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