PollFn in std::future - Rust (original) (raw)
Struct PollFn
1.64.0 · Source
pub struct PollFn<F> { /* private fields */ }Expand description
A Future that wraps a function returning Poll.
This struct is created by poll_fn(). See its documentation for more.
Trait Implementations§
impl Debug for PollFn
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Formats the value using the given formatter. Read more
impl<T, F> Future for PollFn
where F: FnMut(&mut Context<'_>) -> Poll,
type Output = T
The type of value produced on completion.
fn poll(self: Pin<&mut PollFn>, cx: &mut Context<'_>) -> Poll
Attempts to resolve the future to a final value, registering the current task for wakeup if the value is not yet available. Read more
impl Unpin for PollFn
where F: Unpin,
Auto Trait Implementations§
impl Freeze for PollFn
where F: Freeze,
impl RefUnwindSafe for PollFn
where F: RefUnwindSafe,
impl Send for PollFn
where F: Send,
impl Sync for PollFn
where F: Sync,
impl UnwindSafe for PollFn
where F: UnwindSafe,
Blanket Implementations§
impl Any for T
where T: 'static + ?Sized,
fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
impl Borrow for T
where T: ?Sized,
fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
impl BorrowMut for T
where T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl From for T
fn from(t: T) -> T
Returns the argument unchanged.
impl<T, U> Into for T
where U: From,
fn into(self) -> U
Calls U::from(self).
That is, this conversion is whatever the implementation of[From](../convert/trait.From.html "trait std::convert::From")<T> for U chooses to do.
impl IntoFuture for F
where F: Future,
type Output = <F as Future>::Output
The output that the future will produce on completion.
type IntoFuture = F
Which kind of future are we turning this into?
fn into_future(self) -> <F as IntoFuture>::IntoFuture
Creates a future from a value. Read more
impl<T, U> TryFrom for T
where U: Into,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>
Performs the conversion.
impl<T, U> TryInto for T
where U: TryFrom,
type Error = <U as TryFrom>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom>::Error>
Performs the conversion.