Trait CheckedSub 

pub trait CheckedSub: Sub + Sized {
    // Required method
    fn checked_sub(self, rhs: Self) -> Option<Self>;
}

Performs checked substraction. Maps directly to the integers checked_sub method. (i.e. u8::checked_sub) Consult the docs of the primitive methods to learn more.

Required Methods

fn checked_sub(self, rhs: Self) -> Option<Self>

performs checked sub

Example

let a = 2u8;
let b = 1u8;

assert_eq!(CheckedSub::checked_sub(a, b), a.checked_sub(b));
assert_eq!(CheckedSub::checked_sub(b, a), b.checked_sub(a));

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl CheckedSub for i8

fn checked_sub(self, rhs: Self) -> Option<Self>

impl CheckedSub for i16

fn checked_sub(self, rhs: Self) -> Option<Self>

impl CheckedSub for i32

fn checked_sub(self, rhs: Self) -> Option<Self>

impl CheckedSub for i64

fn checked_sub(self, rhs: Self) -> Option<Self>

impl CheckedSub for u8

fn checked_sub(self, rhs: Self) -> Option<Self>

impl CheckedSub for u16

fn checked_sub(self, rhs: Self) -> Option<Self>

impl CheckedSub for u32

fn checked_sub(self, rhs: Self) -> Option<Self>

impl CheckedSub for u64

fn checked_sub(self, rhs: Self) -> Option<Self>

Implementors