Enum `OnceState`

pub enum OnceState

Current state of a Once.

Variants

New: A closure has not been executed yet
Poisoned: A closure was executed but panicked.
InProgress: A thread is currently executing a closure.
Done: A closure has completed successfully.

Implementations

`impl OnceState`

fn poisoned(self) -> bool

Returns whether the associated Once has been poisoned.

Once an initialization routine for a Once has panicked it will forever indicate to future forced initialization routines that it is poisoned.

fn done(self) -> bool

Returns whether the associated Once has successfully executed a closure.

Trait Implementations

`impl Clone for OnceState`

fn clone(&self) -> OnceState

`impl Copy for OnceState`

`impl Debug for OnceState`

fn fmt(&self, f: &mut Formatter<'_>) -> Result

`impl Eq for OnceState`

`impl PartialEq for OnceState`

fn eq(&self, other: &OnceState) -> bool

`impl StructuralPartialEq for OnceState`

Auto Trait Implementations

`impl Freeze for OnceState`

`impl RefUnwindSafe for OnceState`

`impl Send for OnceState`

`impl Sync for OnceState`

`impl Unpin for OnceState`

`impl UnsafeUnpin for OnceState`

`impl UnwindSafe for OnceState`

Blanket Implementations

`impl<T> Any for OnceState where T: 'static + ?Sized,`

fn type_id(&self) -> TypeId

`impl<T> Borrow<T> for OnceState where T: ?Sized,`

fn borrow(&self) -> &T

`impl<T> BorrowMut<T> for OnceState where T: ?Sized,`

fn borrow_mut(&mut self) -> &mut T

`impl<T> CloneToUninit for OnceState where T: Clone,`

unsafe fn clone_to_uninit(&self, dest: *mut u8)

`impl<T> From<T> for OnceState`

fn from(t: T) -> T: Returns the argument unchanged.

`impl<T> ToOwned for OnceState where T: Clone,`

type Owned = T;
fn to_owned(&self) -> T
fn clone_into(&self, target: &mut T)

`impl<T, U> Into for OnceState where U: From<T>,`

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

`impl<T, U> TryFrom for OnceState where U: Into<T>,`

type Error = never;
fn try_from(value: U) -> Result<T, never>

`impl<T, U> TryInto for OnceState where U: TryFrom<T>,`

type Error = >::Error;
fn try_into(self) -> Result<U, >::Error>