Trait num::CheckedSub
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pub trait CheckedSub: Sub<Self, Output = Self> {
fn checked_sub(&self, v: &Self) -> Option<Self>;
}Performs subtraction that returns None instead of wrapping around on underflow.
Required Methods
fn checked_sub(&self, v: &Self) -> Option<Self>
Subtracts two numbers, checking for underflow. If underflow happens,
None is returned.
Implementations on Foreign Types
impl CheckedSub for i16[src]
fn checked_sub(&self, v: &i16) -> Option<i16>[src]
impl CheckedSub for u16[src]
fn checked_sub(&self, v: &u16) -> Option<u16>[src]
impl CheckedSub for isize[src]
fn checked_sub(&self, v: &isize) -> Option<isize>[src]
impl CheckedSub for i64[src]
fn checked_sub(&self, v: &i64) -> Option<i64>[src]
impl CheckedSub for u32[src]
fn checked_sub(&self, v: &u32) -> Option<u32>[src]
impl CheckedSub for i32[src]
fn checked_sub(&self, v: &i32) -> Option<i32>[src]
impl CheckedSub for i8[src]
fn checked_sub(&self, v: &i8) -> Option<i8>[src]
impl CheckedSub for usize[src]
fn checked_sub(&self, v: &usize) -> Option<usize>[src]
impl CheckedSub for u8[src]
fn checked_sub(&self, v: &u8) -> Option<u8>[src]
impl CheckedSub for u64[src]
fn checked_sub(&self, v: &u64) -> Option<u64>[src]
impl<T> CheckedSub for Ratio<T> where
T: Clone + Integer + CheckedSub + CheckedMul, [src]
T: Clone + Integer + CheckedSub + CheckedMul,