Resource management in Rust

We can use this simple example to introduce some core concepts of the Rust programming language.

First, because the variable file stores a handle that corresponds to the file we opened, we say that it is the owner of the file. The variable file is responsible for closing the file. This will happen when the variable goes out of scope. In general, any resource owner is responsible for releasing the resource it owns.

TODO: explain borrowing with the example.

TODO: create another example that illustrates moving.