Trait CheckedAdd 

pub trait CheckedAdd: Sized + Add<Output = Self> {
    // Required method
    fn checked_add(&self, v: &Self) -> Option<Self>;
}

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

Required Methods

fn checked_add(&self, v: &Self) -> Option<Self>

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

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 CheckedAdd for i8

fn checked_add(&self, v: &i8) -> Option<i8>

impl CheckedAdd for i16

fn checked_add(&self, v: &i16) -> Option<i16>

impl CheckedAdd for i32

fn checked_add(&self, v: &i32) -> Option<i32>

impl CheckedAdd for i64

fn checked_add(&self, v: &i64) -> Option<i64>

impl CheckedAdd for i128

fn checked_add(&self, v: &i128) -> Option<i128>

impl CheckedAdd for isize

fn checked_add(&self, v: &isize) -> Option<isize>

impl CheckedAdd for u8

fn checked_add(&self, v: &u8) -> Option<u8>

impl CheckedAdd for u16

fn checked_add(&self, v: &u16) -> Option<u16>

impl CheckedAdd for u32

fn checked_add(&self, v: &u32) -> Option<u32>

impl CheckedAdd for u64

fn checked_add(&self, v: &u64) -> Option<u64>

impl CheckedAdd for u128

fn checked_add(&self, v: &u128) -> Option<u128>

impl CheckedAdd for usize

fn checked_add(&self, v: &usize) -> Option<usize>

impl CheckedAdd for BigInt

fn checked_add(&self, v: &BigInt) -> Option<BigInt>

impl CheckedAdd for BigUint

fn checked_add(&self, v: &BigUint) -> Option<BigUint>

impl CheckedAdd for FixedI64

fn checked_add(&self, rhs: &FixedI64) -> Option<FixedI64>

impl CheckedAdd for FixedI128

fn checked_add(&self, rhs: &FixedI128) -> Option<FixedI128>

impl CheckedAdd for FixedU64

fn checked_add(&self, rhs: &FixedU64) -> Option<FixedU64>

impl CheckedAdd for FixedU128

fn checked_add(&self, rhs: &FixedU128) -> Option<FixedU128>

impl CheckedAdd for PerU16

fn checked_add(&self, rhs: &PerU16) -> Option<PerU16>

impl CheckedAdd for Perbill

fn checked_add(&self, rhs: &Perbill) -> Option<Perbill>

impl CheckedAdd for Percent

fn checked_add(&self, rhs: &Percent) -> Option<Percent>

impl CheckedAdd for Permill

fn checked_add(&self, rhs: &Permill) -> Option<Permill>

impl CheckedAdd for Perquintill

fn checked_add(&self, rhs: &Perquintill) -> Option<Perquintill>

impl CheckedAdd for U128

fn checked_add(&self, v: &U128) -> Option<U128>

impl CheckedAdd for U256

fn checked_add(&self, v: &U256) -> Option<U256>

impl CheckedAdd for U512

fn checked_add(&self, v: &U512) -> Option<U512>

impl<T, D> CheckedAdd for TypeWithDefault<T, D>

where T: CheckedAdd, D: Get<T>,

fn checked_add( &self, rhs: &TypeWithDefault<T, D>, ) -> Option<TypeWithDefault<T, D>>

Implementors

impl CheckedAdd for Weight