Struct init_once::PollInit

source ·
pub struct PollInit<'a, T> { /* private fields */ }
Expand description

Polling mechanism to initialize a value contained in some InitOnce instance.

Implementations§

source§

impl<'init_once, T> PollInit<'init_once, T>

source

pub async fn init_async<F>(&self, init: F) -> &'init_once T
where F: Future<Output = T>,

Initialize the associated InitOnce with the given future init.

source

pub fn poll_init<F>(&self, init: F) -> Poll<&'init_once T>
where F: FnMut() -> Poll<T>,

Check if the value returned by init is ready.

While it is technically possible to initialize multiple different values with this method, the InitOnce abstraction’s soundness is not affected.

Trait Implementations§

source§

impl<'a, T: Debug> Debug for PollInit<'a, T>

source§

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

§

impl<'a, T> Freeze for PollInit<'a, T>

§

impl<'a, T> !RefUnwindSafe for PollInit<'a, T>

§

impl<'a, T> Send for PollInit<'a, T>
where T: Sync,

§

impl<'a, T> Sync for PollInit<'a, T>
where T: Sync,

§

impl<'a, T> Unpin for PollInit<'a, T>

§

impl<'a, T> !UnwindSafe for PollInit<'a, T>

Blanket Implementations§

source§

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

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

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

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

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

source§

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

Mutably borrows from an owned value. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

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

source§

fn into(self) -> U

Calls U::from(self).

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

source§

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

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

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

§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.