Struct std::future::PollFn[−][src]

#[must_use = "futures do nothing unless you `.await` or poll them"]
pub struct PollFn<F> { /* fields omitted */ }
🔬 This is a nightly-only experimental API. (future_poll_fn #72302)

A Future that wraps a function returning Poll.

This struct is created by poll_fn(). See its documentation for more.

Trait Implementations

impl<F> Debug for PollFn<F>[src]

pub fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>[src]

Formats the value using the given formatter. Read more

impl<T, F> Future for PollFn<F> where
    F: FnMut(&mut Context<'_>) -> Poll<T>, [src]

type Output = T

The type of value produced on completion.

pub fn poll(self: Pin<&mut PollFn<F>>, cx: &mut Context<'_>) -> Poll<T>[src]

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

impl<F> Unpin for PollFn<F>[src]

Auto Trait Implementations

impl<F> RefUnwindSafe for PollFn<F> where
    F: RefUnwindSafe, 

impl<F> Send for PollFn<F> where
    F: Send, 

impl<F> Sync for PollFn<F> where
    F: Sync, 

impl<F> UnwindSafe for PollFn<F> where
    F: UnwindSafe, 

Blanket Implementations

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

pub fn type_id(&self) -> TypeId[src]

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

pub fn borrow(&self) -> &Tⓘ

Notable traits for &'_ mut I

impl<'_, I> Iterator for &'_ mut I where
    I: Iterator + ?Sized,  type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
    F: Future + Unpin + ?Sized,  type Output = <F as Future>::Output;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W
[src]

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

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

Notable traits for &'_ mut I

impl<'_, I> Iterator for &'_ mut I where
    I: Iterator + ?Sized,  type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
    F: Future + Unpin + ?Sized,  type Output = <F as Future>::Output;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W
[src]

Mutably borrows from an owned value. Read more

impl<T> From<T> for T[src]

pub fn from(t: T) -> T[src]

Performs the conversion.

impl<T, U> Into<U> for T where
    U: From<T>, [src]

pub fn into(self) -> U[src]

Performs the conversion.

impl<F> IntoFuture for F where
    F: Future, [src]

type Output = <F as Future>::Output

🔬 This is a nightly-only experimental API. (into_future #67644)

The output that the future will produce on completion.

type Future = F

🔬 This is a nightly-only experimental API. (into_future #67644)

Which kind of future are we turning this into?

pub fn into_future(self) -> <F as IntoFuture>::Future[src]

🔬 This is a nightly-only experimental API. (into_future #67644)

Creates a future from a value.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

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

The type returned in the event of a conversion error.

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

Performs the conversion.