grep length is one way:

use warnings;
use strict;
use Data::Dumper;

my @ls = ('stuff', '', 'stuff', '', 10, '', '-', '');
@ls = grep {length} @ls;
print Dumper(\@ls);

__END__

$VAR1 = [
          'stuff',
          'stuff',
          10,
          '-'
        ];
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