in reply to Lets talk Moose
Spiffy is a source filter, Moose is not.
Spiffy is a class builder, Moose is complete object system, including a complete underlying meta system.
Spiffy is written by Ingy, Moose is not ;)
Spiffy is a only sort of based on Perl 6, Moose is heavily based on Perl 6 and will be meta-level compatible with Perl 6 (which should make Ponie's job much easier).
There are a number of other differences, but they get into deep and heavy details, which I won't bother dumping here.
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