Trait polkadot_service::runtime_traits::CheckedSub
source · pub trait CheckedSub: Sized + Sub<Output = Self> {
// Required method
fn checked_sub(&self, v: &Self) -> Option<Self>;
}Expand description
Performs subtraction that returns None instead of wrapping around on underflow.
Required Methods§
sourcefn checked_sub(&self, v: &Self) -> Option<Self>
fn checked_sub(&self, v: &Self) -> Option<Self>
Subtracts two numbers, checking for underflow. If underflow happens,
None is returned.
Object Safety§
This trait is not object safe.