24/01/04 21:53:05.60 ACseOt7T0.net
>>124
こんな感じです？
struct base_ {
virtual base_* clone (void *p) = 0;
virtual ~base_() {};
};
template <typename F>
struct derived_ : base_ {
F f_;
derived_(F f) : f_{ std::move(f) } {}
base_* clone (void *p_buf){
return new(reinterpret_cast<derived_<F>*>(p_buf))(f_);
}
};
A(A& src) {
p_ = src.clone((void*)buf);
};