I know this is just an example, but strict and warnings can help nonetheless. In this case you define @arrray and loop over @array. OK, that's out of my system. :-)
A dispatch table might help, especially if you've got a lot of special cases. For example:
my %dispatch =
(
'#' => \&sub1,
1 => \&sub2,
);
my @array = (1, 2, 3, '#', 6, 7, '#', 9, 10); # corrected typo!
foreach (@array) {
if( exists $dispatch{$_} )
{
$dispatch{$_}->();
}
else
{
sub3();
}
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