"The memory layouts are very different." Clarification: the memory layouts between C++ dynamic dispatch and rust dynamic dispatch are very different. Rust imp

"The memory layouts are very different." Clarification: the memory layouts between C++ dynamic dispatch and rust dynamic dispatch are very different. Rust imposes no requirements on the structure layout, whereas C++ adds some magic data. The magic data means it's awkward to make C++ do dynamic dispatch on a C struct pointer; but rust can do dynamic dispatch on a C struct pointer with no problem.