alt Hacker News> They make sense but reduce type safety
Yes, downcasting can be unsafe and should be used carefully, but what's the alternative? At least in C++ you can't cast between unrelated types without an explicit reinterpret_cast (or C-style cast).
> They make sense but reduce type safety
Yes, downcasting can be unsafe and should be used carefully, but what's the alternative? At least in C++ you can't cast between unrelated types without an explicit reinterpret_cast (or C-style cast).
and you CAN use static_cast to convert from void*; this silently keeps working if you refactor the void* into a matching-type pointer later, while raising a compilation error if you refactor to a different-type pointer.