Struct tokio_file::ReadvAt[−][src]

#[must_use = "futures do nothing unless polled"]
pub struct ReadvAt<'a> { /* fields omitted */ }
Expand description

The return value of [readv_at]

Trait Implementations

impl<'a> Future for ReadvAt<'a>[src]

type Output = Result<usize, Error>

The type of value produced on completion.

fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output>[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

Auto Trait Implementations

impl<'a> !RefUnwindSafe for ReadvAt<'a>

impl<'a> Send for ReadvAt<'a>

impl<'a> Sync for ReadvAt<'a>

impl<'a> Unpin for ReadvAt<'a>

impl<'a> !UnwindSafe for ReadvAt<'a>

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[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[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> FutureExt for T where
    T: Future + ?Sized, 

fn map<U, F>(self, f: F) -> Map<Self, F> where
    F: FnOnce(Self::Output) -> U, 

Map this future’s output to a different type, returning a new future of the resulting type. Read more

fn map_into<U>(self) -> MapInto<Self, U> where
    Self::Output: Into<U>, 

Map this future’s output to a different type, returning a new future of the resulting type. Read more

fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> where
    Fut: Future,
    F: FnOnce(Self::Output) -> Fut, 

Chain on a computation for when a future finished, passing the result of the future to the provided closure f. Read more

fn left_future<B>(self) -> Either<Self, B> where
    B: Future<Output = Self::Output>, 

Wrap this future in an Either future, making it the left-hand variant of that Either. Read more

fn right_future<A>(self) -> Either<A, Self> where
    A: Future<Output = Self::Output>, 

Wrap this future in an Either future, making it the right-hand variant of that Either. Read more

fn into_stream(self) -> IntoStream<Self>

Convert this future into a single element stream. Read more

fn flatten(self) -> Flatten<Self> where
    Self::Output: Future, 

Flatten the execution of this future when the output of this future is itself another future. Read more

fn flatten_stream(self) -> FlattenStream<Self> where
    Self::Output: Stream, 

Flatten the execution of this future when the successful result of this future is a stream. Read more

fn fuse(self) -> Fuse<Self>

Fuse a future such that poll will never again be called once it has completed. This method can be used to turn any Future into a FusedFuture. Read more

fn inspect<F>(self, f: F) -> Inspect<Self, F> where
    F: FnOnce(&Self::Output), 

Do something with the output of a future before passing it on. Read more

fn catch_unwind(self) -> CatchUnwind<Self> where
    Self: UnwindSafe, 

Catches unwinding panics while polling the future. Read more

fn shared(self) -> Shared<Self> where
    Self::Output: Clone, 

Create a cloneable handle to this future where all handles will resolve to the same result. Read more

fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)

Turn this future into a future that yields () on completion and sends its output to another future on a separate task. Read more

fn boxed<'a>(
    self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a + Send, Global>> where
    Self: Send + 'a, 

Wrap the future in a Box, pinning it. Read more

fn boxed_local<'a>(
    self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>> where
    Self: 'a, 

Wrap the future in a Box, pinning it. Read more

fn unit_error(self) -> UnitError<Self>

Turns a Future<Output = T> into a TryFuture<Ok = T, Error = ()>. Read more

fn never_error(self) -> NeverError<Self>

Turns a Future<Output = T> into a TryFuture<Ok = T, Error = Never>. Read more

fn poll_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output> where
    Self: Unpin, 

A convenience for calling Future::poll on Unpin future types.

fn now_or_never(self) -> Option<Self::Output>

Evaluates and consumes the future, returning the resulting output if the future is ready after the first call to Future::poll. Read more

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)

The output that the future will produce on completion.

type Future = F

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

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)

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<F, T, E> TryFuture for F where
    F: Future<Output = Result<T, E>> + ?Sized, 

type Ok = T

The type of successful values yielded by this future

type Error = E

The type of failures yielded by this future

pub fn try_poll(
    self: Pin<&mut F>,
    cx: &mut Context<'_>
) -> Poll<<F as Future>::Output>

Poll this TryFuture as if it were a Future. Read more

impl<Fut> TryFutureExt for Fut where
    Fut: TryFuture + ?Sized, 

fn flatten_sink<Item>(self) -> FlattenSink<Self, Self::Ok> where
    Self::Ok: Sink<Item>,
    <Self::Ok as Sink<Item>>::Error == Self::Error, 

Flattens the execution of this future when the successful result of this future is a [Sink]. Read more

fn map_ok<T, F>(self, f: F) -> MapOk<Self, F> where
    F: FnOnce(Self::Ok) -> T, 

Maps this future’s success value to a different value. Read more

fn map_ok_or_else<T, E, F>(self, e: E, f: F) -> MapOkOrElse<Self, F, E> where
    E: FnOnce(Self::Error) -> T,
    F: FnOnce(Self::Ok) -> T, 

Maps this future’s success value to a different value, and permits for error handling resulting in the same type. Read more

fn map_err<E, F>(self, f: F) -> MapErr<Self, F> where
    F: FnOnce(Self::Error) -> E, 

Maps this future’s error value to a different value. Read more

fn err_into<E>(self) -> ErrInto<Self, E> where
    Self::Error: Into<E>, 

Maps this future’s Error to a new error type using the Into trait. Read more

fn ok_into<U>(self) -> OkInto<Self, U> where
    Self::Ok: Into<U>, 

Maps this future’s Ok to a new type using the Into trait. Read more

fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F> where
    Fut: TryFuture<Error = Self::Error>,
    F: FnOnce(Self::Ok) -> Fut, 

Executes another future after this one resolves successfully. The success value is passed to a closure to create this subsequent future. Read more

fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F> where
    Fut: TryFuture<Ok = Self::Ok>,
    F: FnOnce(Self::Error) -> Fut, 

Executes another future if this one resolves to an error. The error value is passed to a closure to create this subsequent future. Read more

fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F> where
    F: FnOnce(&Self::Ok), 

Do something with the success value of a future before passing it on. Read more

fn inspect_err<F>(self, f: F) -> InspectErr<Self, F> where
    F: FnOnce(&Self::Error), 

Do something with the error value of a future before passing it on. Read more

fn try_flatten(self) -> TryFlatten<Self, Self::Ok> where
    Self::Ok: TryFuture,
    <Self::Ok as TryFuture>::Error == Self::Error, 

Flatten the execution of this future when the successful result of this future is another future. Read more

fn try_flatten_stream(self) -> TryFlattenStream<Self> where
    Self::Ok: TryStream,
    <Self::Ok as TryStream>::Error == Self::Error, 

Flatten the execution of this future when the successful result of this future is a stream. Read more

fn unwrap_or_else<F>(self, f: F) -> UnwrapOrElse<Self, F> where
    F: FnOnce(Self::Error) -> Self::Ok, 

Unwraps this future’s output, producing a future with this future’s Ok type as its Output type. Read more

fn into_future(self) -> IntoFuture<Self>

Wraps a [TryFuture] into a type that implements Future. Read more

fn try_poll_unpin(
    &mut self,
    cx: &mut Context<'_>
) -> Poll<Result<Self::Ok, Self::Error>> where
    Self: Unpin, 

A convenience method for calling [TryFuture::try_poll] on Unpin future types. Read more

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.