undef is not a constant. If you say
$a = undef;
you are not doing what you intend.
undef works like an operator
undef $a;
and can be used with return
return undef;
and can be used in an assignment
$a = undef;
Anti-nuisance lawsuit warning: The purpose of these notes is to remind me, Zoegond, of stuff or to help me work stuff out. They may contain mistakes.
Quick
- ($a, $b....) = unpack("A2A7...", $packed)
- push( array, list )
