I too am interested in making interface style classes more automated. I'm not a big fan of stuffing things in UNIVERSAL however.

If it were me implementing this, I'd make the Attribute::Abstract module the super class of the interface modules like so:

use Attribute::Abstract;
BEGIN { our @ISA = qw[Attribute::Abstract]; }

[download]

That way you don't need to stuff anything into UNIVERSAL. Then, in Attribute::Abstract, I'd register all modules that use() it (via inheritance of an import()) and check their @ISA for Attribute::Abstract and cause death at compile time for non-overidden methods.

Of course this is all 100% conjecture. I'm not sure if it's possible, etc. But it's the direction I would go in if posed this particular problem.

In reply to Re: Dealing with abstract methods in Perl 5.8 by bennymack
in thread Dealing with abstract methods in Perl 5.8 by glasswalk3r

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