The downside of unique_ptr used this way is that you have to define ~C in the sa...

ridiculous_fish · on Aug 31, 2021

You can use a custom deleter, e.g.

    struct deleter_t { void operator()(impl_t *); };
    using impl_unique_ptr_t = std::unique_ptr<impl_t, deleter_t>;

You can place the implementation of the deleter alongside the impl.

cma · on Aug 31, 2021

That breaks make_unique. Maybe unique_ptr inside an std::any? Error-prone casting, but managed lifetime. Though make_unique is maybe obsolete now that parameter evaluation order is better defined.

leni536 · on Aug 31, 2021

You have to do that anyway, unique_ptr only makes forgetting that a compile error.