What's In a Reference?
We'll cover the following...
We'll cover the following...
Every value in Rust lives somewhere in your computer’s memory. And every place in computer memory has an address. It’s possible to use println and the special {:p} syntax to display the address itself:
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Rust 1.40.0
fn main() {let x: i32 = 5;println!("x == {}, located at {:p}", x, &x);}
On my computer, this prints x == 5, located at 0x7ffeeb9b68f4. A reference can be thought of as a pointer; it’s an address pointing at a value that lives somewhere else. That’s also why we use the letter p in the format string ...