documentation is much better, here are a few links that should answer your question https://doc.rust-lang.org/book/ch04-02-references-and-borrowing.html https:

documentation is much better, here are a few links that should answer your question https://doc.rust-lang.org/book/ch04-02-references-and-borrowing.html https://doc.rust-lang.org/book/ch04-02-references-and-borrow... https://doc.rust-lang.org/book/ch10-03-lifetime-syntax.html https://doc.rust-lang.org/book/ch10-03-lifetime-syntax.html