core::num::traits::ops::checked::CheckedAdd

Performs addition that returns None instead of wrapping around on overflow.

Signature

pub trait CheckedAdd

Examples

use core::num::traits::CheckedAdd;

let result = 1_u8.checked_add(2);
assert!(result == Some(3));

let result = 255_u8.checked_add(1);
assert!(result == None); // Overflow

Trait functions

checked_add

Adds two numbers, checking for overflow. If overflow happens, None is returned.

Signature

fn checked_add(self: T, v: T) -> Option