Rust operators

Arithmetic

+ // add
- // subtract
/ // divide
* // multiply

Operator overloading is supported in rust, by implementing std::ops traits.
It does not need to be generic.

struct Num {
    val i32,
}

impl ops::Add<T> for Num {
    type Output = T;

    fn add(self, _rhs: T) -> T {
        // ...
    }
}

let num = Num{val: 123};
num + 1;

Result Operators

?

• ok-val assign to `bar`
• err-val return-early with Err(Err-val)

fn foo() -> Result<_, _> {
    let bar = get_result()?;
}