Bug in empty method of MooseX::AttributeHelpers::MethodProvider::List?

All,

Shouldn't

        sub empty : method {
            my ($attr, $reader, $writer) = @_;
            return sub { 
                scalar @{$reader->($_[0])} ? 1 : 0
            };        
        }

instead say:

        scalar @{$reader->($_[0])} ? 0 : 1

Running a simple test (attached) gives:

        > mX_AH_CA_test
        Count: 0
        Empty returns: 0
        Count: 5
        Empty returns: 1

Also, I'm unfamiliar with the ': method' business after the subroutine
name, can someone explain?

Thanks.

Tod

-- 
Tod Hagan
Information Technologist
AIRMAP/Climate Change Research Center
Institute for the Study of Earth, Oceans, and Space
University of New Hampshire
Durham, NH 03824
Phone: 603-862-3116