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require EXPR only accepts Class/Name.pm style module names, not Class::Name. How frustrating! For that, we provide load_class 'Class::Name'. It's often useful to test whether a module can be loaded, instead of throwing an error when it's not available. For that, we provide try_load_class 'Class::Name'. Finally, sometimes we need to know whether a particular class has been loaded. Asking %INC is an option, but that will miss inner packages and any class for which the filename does not correspond to the package name. For that, we provide is_class_loaded 'Class::Name'.
This module provides an XS implementation for portions of Class::Load. See Class::Load for API details.
Method modifiers are a powerful feature from the CLOS (Common Lisp Object System) world. In its most basic form, a method modifier is just a method that calls '$self->SUPER::foo(@_)'. I for one have trouble remembering that exact invocation, so my classes seldom re-dispatch to their base classes. Very bad! 'Class::Method::Modifiers' provides three modifiers: 'before', 'around', and 'after'. 'before' and 'after' are run just before and after the method they modify, but can not really affect that original method. 'around' is run in place of the original method, with a hook to easily call that original method. See the 'MODIFIERS' section for more details on how the particular modifiers work.
Class::MethodMaker solves the problem of having to continually write accessor methods for your objects that perform standard tasks.