The Class::Generate package exports functions that take as arguments a class
specification and create from these specifications a Perl 5 class. The
specification language allows many object-oriented constructs: typed members,
inheritance, private members, required members, default values, object methods,
class methods, class variables, and more.

CPAN contains similar packages. Why another? Because object-oriented
programming, especially in a dynamic language like Perl, is a complicated
endeavor. I wanted a package that would work very hard to catch the errors you
(well, I anyway) commonly make. I wanted a package that could help me enforce
the contract of object-oriented programming. I also wanted it to get out of my
way when I asked.