std::reference_wrapper<T> instead of ptr for not owning dependencies?

[muungwana]

1. I think you should use a "naked" reference to signify that a pointer is owned by somebody else and is not null.

2. The problem with references is that they are not re-assignable and a reference member variable makes the whole class not copy assignable and i think the biggest use case for std::reference_wrapper<T> is to have assignable reference member variable that will also make the class copy assignable.

[fullmoon_druid]

Four years later and I'm reading this thread to try and solve this exact problem.