Change Details

The buffer is now explicitly an argument to the function. The user doesn't have to fidle with `std::shared_ptr`. And two more unrelated things: use `std::unordered_map`, use a `std::find_if` in the callback.

The buffer is now explicitly an argument to the function. The user doesn't have to fiddle with `std::shared_ptr`. And two more unrelated things: use `std::unordered_map`, use a `std::find_if` in the callback.

The buffer is now explicitly an argument to the function. The user doesn't have to fiddle with `std::shared_ptr`. And two more unrelated things: use `std::unordered_map`, use a `std::find_if` in the callback.