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.
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Warner Bros. Discovery and Paramount Skydance's merger agreement is now official. On Friday, the two companies announced plans to merge into a massive media company that will fold WBD's studio, linear channels, streaming service, and gaming segment into Paramount.