On Thu, Mar 5, 2009 at 6:17 PM, Rob Kinyon <[email protected]> wrote: > On Thu, Mar 5, 2009 at 12:07, David Ihnen <[email protected]> wrote: >> Nothing is actually a plugin that impliments the 'Nothing' design pattern - >> that is - instead of returning null when referencing a row in an empty >> resultset (particularly ->single and ->first, which I use many times when >> NOT looping over results, hence resulting in undef dereference errors on >> empty) it instead returns a magical 'Nothing' object which has >> characteristics like - (->is_nothing === 1, ->id === 0, @list = $rs->method >> === (), $row = $rs->method === bless({}, Nothing). The result - no need to >> if-then on empty resultsets when grabbing data. > > So, the following are different: > my $x = $rs->method; > my ($y) = $rs->method; > > That's sucky.
Not that I have any opinion - but the 'search' method has this same feature. -- Zbigniew Lukasiak http://brudnopis.blogspot.com/ http://perlalchemy.blogspot.com/ _______________________________________________ List: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/dbix-class IRC: irc.perl.org#dbix-class SVN: http://dev.catalyst.perl.org/repos/bast/DBIx-Class/ Searchable Archive: http://www.grokbase.com/group/[email protected]
