Struct futures_util::stream::Fold

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pub struct Fold<St, Fut, T, F> { /* private fields */ }

Expand description

Future for the fold method.

Trait Implementations

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impl<St, Fut, T, F> Debug for Fold<St, Fut, T, F> where
 St: Debug,
 Fut: Debug,
 T: Debug,

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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<St, Fut, T, F> FusedFuture for Fold<St, Fut, T, F> where
 St: Stream,
 F: FnMut(T, St::Item) -> Fut,
 Fut: Future<Output = T>,

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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<St, Fut, T, F> Future for Fold<St, Fut, T, F> where
 St: Stream,
 F: FnMut(T, St::Item) -> Fut,
 Fut: Future<Output = T>,

type Output = T

The type of value produced on completion.

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fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<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<'pin, St, Fut, T, F> Unpin for Fold<St, Fut, T, F> where
Origin<'__pin, St, Fut, T, F>: Unpin,

Auto Trait Implementations

impl<St, Fut, T, F> RefUnwindSafe for Fold<St, Fut, T, F> where
 F: RefUnwindSafe,
 Fut: RefUnwindSafe,
 St: RefUnwindSafe,
 T: RefUnwindSafe,

impl<St, Fut, T, F> Send for Fold<St, Fut, T, F> where
 F: Send,
 Fut: Send,
 St: Send,
 T: Send,

impl<St, Fut, T, F> Sync for Fold<St, Fut, T, F> where
 F: Sync,
 Fut: Sync,
 St: Sync,
 T: Sync,

impl<St, Fut, T, F> UnwindSafe for Fold<St, Fut, T, F> where
 F: UnwindSafe,
 Fut: UnwindSafe,
 St: UnwindSafe,
 T: 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

The output that the future will produce on completion.

type IntoFuture = F

Which kind of future are we turning this into?

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

Creates a future from a value. Read more

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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<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

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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

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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::stream::Fold

Trait Implementations

impl<St, Fut, T, F> Debug for Fold<St, Fut, T, F> where
    St: Debug,
    Fut: Debug,
    T: Debug,

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

impl<St, Fut, T, F> FusedFuture for Fold<St, Fut, T, F> where
    St: Stream,
    F: FnMut(T, St::Item) -> Fut,
    Fut: Future<Output = T>,

fn is_terminated(&self) -> bool

impl<St, Fut, T, F> Future for Fold<St, Fut, T, F> where
    St: Stream,
    F: FnMut(T, St::Item) -> Fut,
    Fut: Future<Output = T>,

type Output = T

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

impl<'pin, St, Fut, T, F> Unpin for Fold<St, Fut, T, F> where
Origin<'__pin, St, Fut, T, F>: Unpin,

Auto Trait Implementations

impl<St, Fut, T, F> RefUnwindSafe for Fold<St, Fut, T, F> where
    F: RefUnwindSafe,
    Fut: RefUnwindSafe,
    St: RefUnwindSafe,
    T: RefUnwindSafe,

impl<St, Fut, T, F> Send for Fold<St, Fut, T, F> where
    F: Send,
    Fut: Send,
    St: Send,
    T: Send,

impl<St, Fut, T, F> Sync for Fold<St, Fut, T, F> where
    F: Sync,
    Fut: Sync,
    St: Sync,
    T: Sync,

impl<St, Fut, T, F> UnwindSafe for Fold<St, Fut, T, F> where
    F: UnwindSafe,
    Fut: UnwindSafe,
    St: UnwindSafe,
    T: 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<F, T, E> TryFuture for F where
F: Future<Output = Result<T, E>> + ?Sized,

type Ok = T

type Error = E

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

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::stream::Fold

Trait Implementations

impl<St, Fut, T, F> Debug for Fold<St, Fut, T, F> where St: Debug, Fut: Debug, T: Debug,

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

impl<St, Fut, T, F> FusedFuture for Fold<St, Fut, T, F> where St: Stream, F: FnMut(T, St::Item) -> Fut, Fut: Future<Output = T>,

fn is_terminated(&self) -> bool

impl<St, Fut, T, F> Future for Fold<St, Fut, T, F> where St: Stream, F: FnMut(T, St::Item) -> Fut, Fut: Future<Output = T>,

type Output = T

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

impl<'__pin, St, Fut, T, F> Unpin for Fold<St, Fut, T, F> where __Origin<'__pin, St, Fut, T, F>: Unpin,

Auto Trait Implementations

impl<St, Fut, T, F> RefUnwindSafe for Fold<St, Fut, T, F> where F: RefUnwindSafe, Fut: RefUnwindSafe, St: RefUnwindSafe, T: RefUnwindSafe,

impl<St, Fut, T, F> Send for Fold<St, Fut, T, F> where F: Send, Fut: Send, St: Send, T: Send,

impl<St, Fut, T, F> Sync for Fold<St, Fut, T, F> where F: Sync, Fut: Sync, St: Sync, T: Sync,

impl<St, Fut, T, F> UnwindSafe for Fold<St, Fut, T, F> where F: UnwindSafe, Fut: UnwindSafe, St: UnwindSafe, T: 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<F, T, E> TryFuture for F where F: Future<Output = Result<T, E>> + ?Sized,

type Ok = T

type Error = E

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

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<St, Fut, T, F> Debug for Fold<St, Fut, T, F> where
St: Debug,
Fut: Debug,
T: Debug,

impl<St, Fut, T, F> FusedFuture for Fold<St, Fut, T, F> where
St: Stream,
F: FnMut(T, St::Item) -> Fut,
Fut: Future<Output = T>,

impl<St, Fut, T, F> Future for Fold<St, Fut, T, F> where
St: Stream,
F: FnMut(T, St::Item) -> Fut,
Fut: Future<Output = T>,

impl<'pin, St, Fut, T, F> Unpin for Fold<St, Fut, T, F> where
Origin<'__pin, St, Fut, T, F>: Unpin,

impl<St, Fut, T, F> RefUnwindSafe for Fold<St, Fut, T, F> where
F: RefUnwindSafe,
Fut: RefUnwindSafe,
St: RefUnwindSafe,
T: RefUnwindSafe,

impl<St, Fut, T, F> Send for Fold<St, Fut, T, F> where
F: Send,
Fut: Send,
St: Send,
T: Send,

impl<St, Fut, T, F> Sync for Fold<St, Fut, T, F> where
F: Sync,
Fut: Sync,
St: Sync,
T: Sync,

impl<St, Fut, T, F> UnwindSafe for Fold<St, Fut, T, F> where
F: UnwindSafe,
Fut: UnwindSafe,
St: UnwindSafe,
T: 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<F, T, E> TryFuture for F where
F: Future<Output = Result<T, E>> + ?Sized,

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

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