in reply to Re: Scalar and void subroutines
in thread Scalar and void subroutines

You're right; my description was iffy. What I meant was:

If called in void context, I am expecting a reference to be passed.
If called in scalar context, I am expecting... either, actually, but there must be a reference in void.

Sorry about that.

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Re^3: Scalar and void subroutines
by GrandFather (Saint) on Nov 10, 2005 at 21:35 UTC

    So you could:

    

sub name {
  die 'ref arg required in void context' if ! defined wantarray and ! 
+ref $_[0];
  my ($arg) = @_;
  if (ref $arg) {
    $$arg = 'x';
    return;
  }

  return 'x';
}

    [download]

    as a check that you've got a ref param in void context.

    Perl is Huffman encoded by design.
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