Assertion: lisp's object system | /r/CapableOf | find their way
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text: Because of the power and expressivity of CLOS, as well as the historical availability of TinyCLOS (a simplified portable CLOS implementation written by Gregor Kiczales for use with Scheme), CLOS-like MOP-based object systems have become the de facto norm in most Lisp dialect implementations, as well as finding their way into some other languages' OOP facilities: