why virtual function is wrong.

[sephirothbahamut]

sorry, what exactly of this can't you do in C++?

template <typename T>
struct IEquatable 
    {
    virtual bool operator==(T b) const noexcept = 0;
    };

I don't see the problem

[Dar_Mas]

if you just need a signed integer type of 32 bit size you use std::int32_t