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Defined and Exists, but what about neither?

by c (Hermit)
on Aug 21, 2002 at 13:27 UTC ( #191725=perlquestion: print w/replies, xml ) Need Help??

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  1. or download this
    &log_action(\%args);
  2. or download this
    $args{err} = $s->error();
  3. or download this
    sub log_action {
  my $args = shift;
  4. or download this
    if ($args->{err}) {
  # do something...
  5. or download this
    if (defined $args->{err}) {

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