Struct async_once::AsyncOnce

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pub struct AsyncOnce<T: 'static> { /* private fields */ }

Implementations

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impl<T> AsyncOnce<T>

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pub fn new<F>(fut: F) -> AsyncOnce<T>ⓘNotable traits for &'static AsyncOnce<T>`impl<T> Future for &'static AsyncOnce<T> type Output = &'static T;` where
F: Future<Output = T> + 'static,

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pub fn get(&'static self) -> &'static Self

Trait Implementations

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impl<T> Future for &'static AsyncOnce<T>

type Output = &'static T

The type of value produced on completion.

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fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<&'static T>

Attempt to resolve the future to a final value, registering the current task for wakeup if the value is not yet available. Read more

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impl<T: 'static> Sync for AsyncOnce<T>

Auto Trait Implementations

impl<T> !RefUnwindSafe for AsyncOnce<T>

impl<T> !Send for AsyncOnce<T>

impl<T> Unpin for AsyncOnce<T> where
T: Unpin,

impl<T> UnwindSafe for AsyncOnce<T> where
T: RefUnwindSafe,

Blanket Implementations

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · 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.

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

Struct async_once::AsyncOnce

Implementations

impl<T> AsyncOnce<T>

pub fn new<F>(fut: F) -> AsyncOnce<T>ⓘNotable traits for &'static AsyncOnce<T>`impl<T> Future for &'static AsyncOnce<T> type Output = &'static T;` where
F: Future<Output = T> + 'static,

pub fn get(&'static self) -> &'static Self

Trait Implementations

impl<T> Future for &'static AsyncOnce<T>

type Output = &'static T

fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<&'static T>

impl<T: 'static> Sync for AsyncOnce<T>

Auto Trait Implementations

impl<T> !RefUnwindSafe for AsyncOnce<T>

impl<T> !Send for AsyncOnce<T>

impl<T> Unpin for AsyncOnce<T> where
T: Unpin,

impl<T> UnwindSafe for AsyncOnce<T> where
T: RefUnwindSafe,

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

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

type Error = Infallible

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

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

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

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

Struct async_once::AsyncOnce

Implementations

impl<T> AsyncOnce<T>

pub fn new<F>(fut: F) -> AsyncOnce<T>ⓘNotable traits for &'static AsyncOnce<T>impl<T> Future for &'static AsyncOnce<T> type Output = &'static T; where F: Future<Output = T> + 'static,

pub fn get(&'static self) -> &'static Self

Trait Implementations

impl<T> Future for &'static AsyncOnce<T>

type Output = &'static T

fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<&'static T>

impl<T: 'static> Sync for AsyncOnce<T>

Auto Trait Implementations

impl<T> !RefUnwindSafe for AsyncOnce<T>

impl<T> !Send for AsyncOnce<T>

impl<T> Unpin for AsyncOnce<T> where T: Unpin,

impl<T> UnwindSafe for AsyncOnce<T> where T: RefUnwindSafe,

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

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

type Error = Infallible

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

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

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

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

pub fn new<F>(fut: F) -> AsyncOnce<T>ⓘNotable traits for &'static AsyncOnce<T>`impl<T> Future for &'static AsyncOnce<T> type Output = &'static T;` where
F: Future<Output = T> + 'static,

impl<T> Unpin for AsyncOnce<T> where
T: Unpin,

impl<T> UnwindSafe for AsyncOnce<T> where
T: RefUnwindSafe,

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

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

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

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

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

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