[Matthias247]

Yes. Eg if you look at Java try-with-resources there is an exact scope during which resources live and can be used. At the end of the scope the .close() method will be called.

For C++ and Rust there might not be a well defined scope since objects can be „moved“. Eg a method constructing an object can return it to the caller without the destructor being called.

[jolux]

It's well-defined, it's just more flexible than Java. The difference is that returning a value moves it, and resources are owned by the creating scope by default. Java doesn't have the same concept of ownership, or rather, you can't move values in Java.