class :open

[rurban]

very unsure if we really should support this.
traditional package NAME {} can already do that, and classes should bear a prominent advantage over them. i.e. compile-time optimizable.

monkey-typing by injecting classes into the @ISA is frowned upon, rather add your Mock class at the end and test that. see the ruby on rails desaster.

there is the old dirty dynamic way to do things, and then the new cperl static way to optimize things.