UniqueResource, a C++ template class as a universal resource manager

[WhoCares]

Your coding a wrapper/aggregator for std::unique_ptr is a good choice.

Some types are same, but with different default values and different cleanup APIs.

For OpenProcess()/OpenThreadToken() etc., the type is HANDLE, the default value is NULL, the cleanup API is CloseHandle().

For CreateFile()/FindFirstFile()/CreateToolhelp32Snapshot() etc., the type is also HANDLE, but the default value is INVALID_HANDLE_VALUE, and the cleanup API for FindFirstFile() is FindClose(), instead of CloseHandle().

So that's why I use traits/adapter to describe the difference.

And, I need the operator&() override to auto reset to the default value when reusing the same UniqueResource variable.

Originally Posted by atom0s

Using templates can remove the need to manually define the delete function. It can also be used to further extend into a custom wrapper to deal with the other parts you mentioned as well such as: