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C++ doesn't have multiple dispatch. I think the OP was referring to multiple inheritance, which is not the same thing.

I was thinking of runtime single dispatch with compile-time type of the arguments to that function.

So virtual function overloading?

Can you give a small bit of sample code to demonstrate what you mean?

just ordinary virtual function that discriminates upon arguments (at compile-time).

Yeah, multiple dispatch implies more than one argument involved in the dispatch decision at runtime. So that's not the same thing.