That's an extremely cool approach! It's actually quite obvious, once it's demonstrated. (As all neat and simple things usually are ...)
Now, are there maintainability issues here? Why would you put create() in UNIVERSAL instead of exporting it, ala use My::Types qw(create);?
Also, I would assume that, since you're eval'ing the package, you could have it do inheritance and the like, right? It would be interesting to see a non-trivial example of this in action ...
We are the carpenters and bricklayers of the Information Age.
The idea is a little like C++ templates, except not quite so brain-meltingly complicated. -- TheDamian, Exegesis 6
Please remember that I'm crufty and crochety. All opinions are purely mine and all code is untested, unless otherwise specified.
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