Performs subtraction that returns None instead of wrapping around on underflow.
fn checked_sub(&self, v: &Self) -> Option<Self>[src][−]Subtracts two numbers, checking for underflow. If underflow happens,
None is returned.
impl CheckedSub for u8[src][−]fn checked_sub(&self, v: &u8) -> Option<u8>[src]impl CheckedSub for u16[src][−]fn checked_sub(&self, v: &u16) -> Option<u16>[src]impl CheckedSub for u32[src][−]fn checked_sub(&self, v: &u32) -> Option<u32>[src]impl CheckedSub for u64[src][−]fn checked_sub(&self, v: &u64) -> Option<u64>[src]impl CheckedSub for usize[src][−]fn checked_sub(&self, v: &usize) -> Option<usize>[src]impl CheckedSub for u128[src][−]fn checked_sub(&self, v: &u128) -> Option<u128>[src]impl CheckedSub for i8[src][−]fn checked_sub(&self, v: &i8) -> Option<i8>[src]impl CheckedSub for i16[src][−]fn checked_sub(&self, v: &i16) -> Option<i16>[src]impl CheckedSub for i32[src][−]fn checked_sub(&self, v: &i32) -> Option<i32>[src]impl CheckedSub for i64[src][−]fn checked_sub(&self, v: &i64) -> Option<i64>[src]impl CheckedSub for isize[src][−]fn checked_sub(&self, v: &isize) -> Option<isize>[src]impl CheckedSub for i128[src][−]fn checked_sub(&self, v: &i128) -> Option<i128>[src]