Trait num_traits::identities::One [−][src]
pub trait One: Sized + Mul<Self, Output = Self> { fn one() -> Self; fn set_one(&mut self) { ... } fn is_one(&self) -> bool
where
Self: PartialEq, { ... } }
Required methods
fn one() -> Self[src]
Returns the multiplicative identity element of Self, 1.
Purity
This function should return the same result at all times regardless of
external mutable state, for example values stored in TLS or in
static muts.
Provided methods
fn set_one(&mut self)[src]
Sets self to the multiplicative identity element of Self, 1.
fn is_one(&self) -> bool where
Self: PartialEq, [src]
Self: PartialEq,
Returns true if self is equal to the multiplicative identity.
For performance reasons, it’s best to implement this manually.
After a semver bump, this method will be required, and the
where Self: PartialEq bound will be removed.
Implementations on Foreign Types
impl<T: One> One for Wrapping<T> where
Wrapping<T>: Mul<Output = Wrapping<T>>, [src]
impl<T: One> One for Wrapping<T> where
Wrapping<T>: Mul<Output = Wrapping<T>>, [src]