19 lines
976 B
Text
19 lines
976 B
Text
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Method modifiers are a powerful feature from the CLOS (Common Lisp
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Object System) world. In its most basic form, a method modifier is just
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a method that calls $self->SUPER::foo(@_).
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Class::Method::Modifiers provides three modifiers: before, around, and
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after. "before" and "after" are run just before and after the method they
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modify, but can not really affect that original method. "around" is run in
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place of the original method, with a hook to easily call that original
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method.
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One clear benefit of using Class::Method::Modifiers is that you can
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define multiple modifiers in a single namespace. These separate modifiers
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don't need to know about each other. This makes top-down design easy.
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Have a base class that provides the skeleton methods of each operation,
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and have plugins modify those methods to flesh out the specifics.
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In short, Class::Method::Modifiers solves the problem of making sure you
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call $self->SUPER::foo(@_), and provides a cleaner interface for it.
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