#pragma once

template <class T>
struct DefaultDeleter {
    void operator()(T* ptr) const {
        delete ptr;
    }
};

template <class>
struct RemoveMemberPtrImpl {};

template <class T, class U>
struct RemoveMemberPtrImpl<U T::*> {
    using Type = U;
};

template <class T>
using RemoveMemberPtr = typename RemoveMemberPtrImpl<T>::Type;