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Standard C++ RTTI works by embedding a pointer to a type_info object inside every polymorphic class's vtable. A dynamic_cast then traverses a chain of these type_info objects at runtime, comparing strings or pointers until it finds a match or exhausts the hierarchy. For a compiler that performs millions of type checks per second while traversing an AST, this traversal cost is unacceptable.
,这一点在wps中也有详细论述
Стало известно о планах ЕС запретить въезд в Европу семьям участников СВО02:28
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