I have two attributes, 'xml' and 'xml_file' for an object. One or the other must be supplied, but not both.
Must I validated this in BUILD or is there another way of doing this? Cheers, Ovid -- Buy the book - http://www.oreilly.com/catalog/perlhks/ Tech blog - http://use.perl.org/~Ovid/journal/ Twitter - http://twitter.com/OvidPerl Official Perl 6 Wiki - http://www.perlfoundation.org/perl6
