How should you do pointer arithmetic in Rust?

Pointers have an offset method for pointer arithmetic.

fn main() {
    let items = [1usize, 2, 3, 4];

    let ptr = &items[1] as *const usize;

    println!("{}", unsafe { *ptr });
    println!("{}", unsafe { *ptr.offset(-1) });
    println!("{}", unsafe { *ptr.offset(1) });
}

Output

2
1
3

https://doc.rust-lang.org/nightly/book/first-edition/unsafe.html

How should you do pointer arithmetic in Rust?

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