C++ Converting function pointer to unique “hash” key

Question

Se original question in the bottom.

I think I understand what you guys are saying now – that because the internal structure of the member function pointer is compiler/ma

Answer 1

You should be fine writing:

reinterpret_cast(method)

[edit] - for pointers to methods you will have to stay with c-style casts, as is explained in this SO: reinterpret_cast to void* not working with function pointers

&method is as you suspec pointer to pointer, so its not what you want

uintptr_t is better over int because it is guaranteed to be the same size as a pointer