Good day Perl monks

I was wondering if it was possible to test if a variable was a folder handle. I could not find any documentation or forum posts so far. I have written some code which works as shown below. I was wondering if there was a better way to perform the folder testing section as my code seems inelegant.

Also, I am aware that the file testing section could be improved but there is already plenty of comment on that in the following posts

http://www.perlmonks.org/?node_id=980665 Best way to check if something is a file handle?

https://stackoverflow.com/questions/3214647/what-is-the-best-way-to-determine-if-a-scalar-holds-a-filehandle

https://stackoverflow.com/questions/3807231/how-can-i-test-if-i-can-write-to-a-filehandle/4200474#4200474

#!perl

use strict;
use warnings;
use Data::Dumper;
use File::Temp qw(tempfile tempdir);
use Scalar::Util qw(looks_like_number openhandle);


my $fh = tempfile();
#my $dh = tempdir();
opendir(my $dh, '.') || die "Can't opendir: $!";
my $string = 'path\to\file\name';

print Dumper handleRef($fh);
print Dumper handleRef($dh);
print Dumper handleRef($string);


sub handleRef {
    my ($handle) = @_;
    my ($fh, $dataTypeHash) = @_;

    # Folder test (may be possible to improve)...
    my $folderType = eval {
        no warnings;
        telldir ($fh);
    };
    if (looks_like_number($folderType)){
        $folderType = 1;
    } else {
        $folderType = 0;
    }
    return 'FOLDERHANDLE' if ($folderType);
    
    
    
    # File test...
    my $handleType = openhandle($handle);
    return 'FILEHANDLE' if (openhandle($handle));
    
    # Everything else...
    return ref \$fh;
}

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In reply to Testing for a directory handle by ns550

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