[−][src]Struct std::option::NoneError
The error type that results from applying the try operator (?) to a None value. If you wish
to allow x? (where x is an Option<T>) to be converted into your error type, you can
implement impl From<NoneError> for YourErrorType. In that case, x? within a function that
returns Result<_, YourErrorType> will translate a None value into an Err result.
Trait Implementations
impl Clone for NoneError[src]
impl Copy for NoneError[src]
impl Debug for NoneError[src]
impl Eq for NoneError[src]
impl Hash for NoneError[src]
fn hash<__H>(&self, state: &mut __H) where
__H: Hasher, [src]
__H: Hasher,
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher, 1.3.0[src]
H: Hasher,
impl Ord for NoneError[src]
fn cmp(&self, other: &NoneError) -> Ordering[src]
#[must_use]
fn max(self, other: Self) -> Self1.21.0[src]
#[must_use]
fn min(self, other: Self) -> Self1.21.0[src]
#[must_use]
fn clamp(self, min: Self, max: Self) -> Self[src]
impl PartialEq<NoneError> for NoneError[src]
impl PartialOrd<NoneError> for NoneError[src]
fn partial_cmp(&self, other: &NoneError) -> Option<Ordering>[src]
#[must_use]
fn lt(&self, other: &Rhs) -> bool1.0.0[src]
#[must_use]
fn le(&self, other: &Rhs) -> bool1.0.0[src]
#[must_use]
fn gt(&self, other: &Rhs) -> bool1.0.0[src]
#[must_use]
fn ge(&self, other: &Rhs) -> bool1.0.0[src]
impl StructuralEq for NoneError[src]
impl StructuralPartialEq for NoneError[src]
Auto Trait Implementations
impl RefUnwindSafe for NoneError
impl Send for NoneError
impl Sync for NoneError
impl Unpin for NoneError
impl UnwindSafe for NoneError
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized, [src]
T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized, [src]
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized, [src]
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T[src]
impl<T> From<T> for T[src]
impl<T, U> Into<U> for T where
U: From<T>, [src]
U: From<T>,
impl<T> ToOwned for T where
T: Clone, [src]
T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T[src]
fn clone_into(&self, target: &mut T)[src]
impl<T, U> TryFrom<U> for T where
U: Into<T>, [src]
U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]
impl<T, U> TryInto<U> for T where
U: TryFrom<T>, [src]
U: TryFrom<T>,