| http://www.w3.org/ns/prov#value | - Virtual functions, especially the pure virtual functions which COM uses, are great but they did my head in until I looked at it from a C point of view (arrays of function pointers). dynamic_cast was related to my understanding of virtual functions, but the fact that you can cross-cast from one class to another (unrelated) class still does my head in, even though I know how it works!
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