Monks, ok, I have this function that returns HTML::Element objects that satisfy a certain lookdown, and are not "self nested." See comments below for what I mean by self nested.

This seems to work, but I wanted the test for whether lookdown returned anything to be, is the @array an empty list. This doesn't work. But is $#array > 0 works. I thought the two were the same, but obviously not.

Basically, in the below code I want to have if ( @nested_same_kind_of_tag ) as a test instead of if ( $#nested_same_kind_of_tag ). But only the second one works. Am I missing something obvious?

Complete code:

# first arg is an HTML::Element, second arg is a tag to match with loo
+kdown.
# this should only return tags that don't have themselves nested somew
+here inside.
# ie, if checking <font color="red">blah <font color="red">red blah</f
+ont> blah</font>
# it should only return the inner font tag, not the outer.
# it works, but I don't like the if test using $#.  Is there a better 
+way?
sub un_self_nested {

    my $element = shift or die "no element";
    $element->isa('HTML::Element') or die "not an html element";
    my %tag_match = @_ or die "no tag match";

    my @unself_nested = $element->look_down( %tag_match,
        sub {
            my $no_mested_matches = 1; # initialize to no nested match
+es, which is what we want.
            my $tag_matches = 0;
            my $tag = $_[0]; # current element
            my @nested_same_kind_of_tag = $tag->look_down( %tag_match 
+);
            
            my $nested_same_kind_of_tag = $#nested_same_kind_of_tag;
            if ( $nested_same_kind_of_tag ) {        
                $no_mested_matches = 0;
                print "nested_same_kind_of_tag: " . $nested_same_kind_
+of_tag . "\n";
            }
            return $no_mested_matches; # only match tags which don't c
+ontain themselves as a nested match.
        } );
    return @unself_nested;
}
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