pseudo-hashes are experimental in perl 5. i haven't read any news about their continued existance in perl 6. in fact, i think they're disappearing in perl 5.10.

thedamian's book, "Object Oriented Perl" can be linked to same as it ever was.

simple searches for 'pseudohash' and 'pseudo-hash' reveal the following:

• using pseudo-hashes for unique lists (was Re: Re: Return a Unique Array)
• Whither the pseudohash?
• Using pseudohash for argument list validation

and here is an off-site link to japhy's homepage http://www.crusoe.net/~jeffp/ where he has a tutorial on using pseudo-hashes.

~Particle *accelerates*