jdagius,
(yes, I know about List::Member, but it won't find 0 (zero) in a list, (bug?)

Yes, there is a bug and you should file a bug. Be sure to CC the author because not all CPAN authors look at their RT queue.

The issue is from this line in the source: 

my $target = shift or Carp::croak "No target in member/2 ";

[download]
It assumes that $target will be true - which rules out '', "0", 0, etc. That sub would probably be better written as: 
sub member {
    my ($target, @list) = @_;
    Carp::croak "No target in member/2 " if ! @list;
    if (defined $target) {
        for (0 .. $#list) {
            return $_ if $list[$_] eq $target;
        }
        return $NEG;
    }
    else {
        for (0 .. $#item) {
            return $_ if ! defined $item[$_];
        }
        return $NEG;
    }
}

[download]

It would also be nice if the documentation explicitly reminded the user that since it returns the index (first item = 0), member() should not be used as a boolean.

With regards to your original question - see Getting Matching Items From An Array.

Cheers - L~R

In reply to Re: sub fails second time called by Limbic~Region
in thread sub fails second time called by jdagius

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