Struct futures_util::future::Select

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pub struct Select<A, B> { /* private fields */ }

Expand description

Future for the select() function.

Trait Implementations

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impl<A: Debug, B: Debug> Debug for Select<A, B>

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

Formats the value using the given formatter. Read more

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impl<A, B> FusedFuture for Select<A, B> where
A: Future + Unpin,
B: Future + Unpin,

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fn is_terminated(&self) -> bool

Returns true if the underlying future should no longer be polled.

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impl<A, B> Future for Select<A, B> where
A: Future + Unpin,
B: Future + Unpin,

type Output = Either<(<A as Future>::Output, B), (::Output, A)>

The type of value produced on completion.

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

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<A: Unpin, B: Unpin> Unpin for Select<A, B>

Auto Trait Implementations

impl<A, B> RefUnwindSafe for Select<A, B> where
A: RefUnwindSafe,
B: RefUnwindSafe,

impl<A, B> Send for Select<A, B> where
A: Send,
B: Send,

impl<A, B> Sync for Select<A, B> where
A: Sync,
B: Sync,

impl<A, B> UnwindSafe for Select<A, B> where
A: UnwindSafe,
B: UnwindSafe,

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<F> IntoFuture for F where
F: Future,

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 IntoFuture = F

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

Which kind of future are we turning this into?

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fn into_future(self) -> <F as IntoFuture>::IntoFuture

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

Creates a future from a value.

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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 futures_util::future::Select

Trait Implementations

impl<A: Debug, B: Debug> Debug for Select<A, B>

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

impl<A, B> FusedFuture for Select<A, B> where
A: Future + Unpin,
B: Future + Unpin,

fn is_terminated(&self) -> bool

impl<A, B> Future for Select<A, B> where
A: Future + Unpin,
B: Future + Unpin,

type Output = Either<(<A as Future>::Output, B), (<B as Future>::Output, A)>

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

impl<A: Unpin, B: Unpin> Unpin for Select<A, B>

Auto Trait Implementations

impl<A, B> RefUnwindSafe for Select<A, B> where
A: RefUnwindSafe,
B: RefUnwindSafe,

impl<A, B> Send for Select<A, B> where
A: Send,
B: Send,

impl<A, B> Sync for Select<A, B> where
A: Sync,
B: Sync,

impl<A, B> UnwindSafe for Select<A, B> where
A: UnwindSafe,
B: UnwindSafe,

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<F> IntoFuture for F where
F: Future,

type Output = <F as Future>::Output

type IntoFuture = F

fn into_future(self) -> <F as IntoFuture>::IntoFuture

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 futures_util::future::Select

Trait Implementations

impl<A: Debug, B: Debug> Debug for Select<A, B>

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

impl<A, B> FusedFuture for Select<A, B> where A: Future + Unpin, B: Future + Unpin,

fn is_terminated(&self) -> bool

impl<A, B> Future for Select<A, B> where A: Future + Unpin, B: Future + Unpin,

type Output = Either<(<A as Future>::Output, B), (<B as Future>::Output, A)>

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

impl<A: Unpin, B: Unpin> Unpin for Select<A, B>

Auto Trait Implementations

impl<A, B> RefUnwindSafe for Select<A, B> where A: RefUnwindSafe, B: RefUnwindSafe,

impl<A, B> Send for Select<A, B> where A: Send, B: Send,

impl<A, B> Sync for Select<A, B> where A: Sync, B: Sync,

impl<A, B> UnwindSafe for Select<A, B> where A: UnwindSafe, B: UnwindSafe,

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<F> IntoFuture for F where F: Future,

type Output = <F as Future>::Output

type IntoFuture = F

fn into_future(self) -> <F as IntoFuture>::IntoFuture

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>

impl<A, B> FusedFuture for Select<A, B> where
A: Future + Unpin,
B: Future + Unpin,

impl<A, B> Future for Select<A, B> where
A: Future + Unpin,
B: Future + Unpin,

impl<A, B> RefUnwindSafe for Select<A, B> where
A: RefUnwindSafe,
B: RefUnwindSafe,

impl<A, B> Send for Select<A, B> where
A: Send,
B: Send,

impl<A, B> Sync for Select<A, B> where
A: Sync,
B: Sync,

impl<A, B> UnwindSafe for Select<A, B> where
A: UnwindSafe,
B: UnwindSafe,

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<F> IntoFuture for F where
F: Future,

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

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