Struct futures_util::stream::Once[−][src]

#[must_use = "streams do nothing unless polled"]
pub struct Once<Fut> { /* fields omitted */ }

A stream which emits single element and then EOF.

Trait Implementations

`impl<Fut: Debug> Debug for Once<Fut>`[src]

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

`impl<Fut: Future> FusedStream for Once<Fut>`[src]

`fn is_terminated(&self) -> bool`[src]

`impl<Fut: Future> Stream for Once<Fut>`[src]

`type Item = Fut::Output`

Values yielded by the stream.

`fn poll_next( self: Pin<&mut Self>, cx: &mut Context<'_> ) -> Poll<Option<Self::Item>>`[src]

`fn size_hint(&self) -> (usize, Option<usize>)`[src]

`impl<'pin, Fut> Unpin for Once<Fut> where Origin<'__pin, Fut>: Unpin,` [src]

Auto Trait Implementations

`impl<Fut> RefUnwindSafe for Once<Fut> where Fut: RefUnwindSafe,`

`impl<Fut> Send for Once<Fut> where Fut: Send,`

`impl<Fut> Sync for Once<Fut> where Fut: Sync,`

`impl<Fut> UnwindSafe for Once<Fut> where Fut: UnwindSafe,`

Blanket Implementations

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

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

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

`pub fn borrow(&self) -> &TⓘNotable traits for &'_ mut F impl<'_, F> Future for &'_ mut F where F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;`[src]

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

`pub fn borrow_mut(&mut self) -> &mut TⓘNotable traits for &'_ mut F impl<'_, F> Future for &'_ mut F where F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;`[src]

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

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

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

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

`impl<T, U> TryFrom 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>::Error>`[src]

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

`type Error = >::Error`

The type returned in the event of a conversion error.

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

`impl<S, T, E> TryStream for S where S: Stream<Item = Result<T, E>> + ?Sized,` [src]

`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_next( self: Pin<&mut S>, cx: &mut Context<'_> ) -> Poll<Option<Result<<S as TryStream>::Ok, <S as TryStream>::Error>>>`[src]

Struct futures_util::stream::Once[−][src]

Trait Implementations

`impl<Fut: Debug> Debug for Once<Fut>`[src]

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

`impl<Fut: Future> FusedStream for Once<Fut>`[src]

`fn is_terminated(&self) -> bool`[src]

`impl<Fut: Future> Stream for Once<Fut>`[src]

`type Item = Fut::Output`

`fn poll_next( self: Pin<&mut Self>, cx: &mut Context<'_> ) -> Poll<Option<Self::Item>>`[src]

`fn size_hint(&self) -> (usize, Option<usize>)`[src]

`impl<'pin, Fut> Unpin for Once<Fut> where Origin<'__pin, Fut>: Unpin,` [src]

Auto Trait Implementations

`impl<Fut> RefUnwindSafe for Once<Fut> where Fut: RefUnwindSafe,`

`impl<Fut> Send for Once<Fut> where Fut: Send,`

`impl<Fut> Sync for Once<Fut> where Fut: Sync,`

`impl<Fut> UnwindSafe for Once<Fut> where Fut: UnwindSafe,`

Blanket Implementations

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

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

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

`pub fn borrow(&self) -> &TⓘNotable traits for &'_ mut F impl<'_, F> Future for &'_ mut F where F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;`[src]

Notable traits for &'_ mut F

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

`pub fn borrow_mut(&mut self) -> &mut TⓘNotable traits for &'_ mut F impl<'_, F> Future for &'_ mut F where F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;`[src]

Notable traits for &'_ mut F

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

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

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

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

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

`type Error = Infallible`

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

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

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

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

`impl<S, T, E> TryStream for S where S: Stream<Item = Result<T, E>> + ?Sized,` [src]

`type Ok = T`

`type Error = E`

`pub fn try_poll_next( self: Pin<&mut S>, cx: &mut Context<'_> ) -> Poll<Option<Result<<S as TryStream>::Ok, <S as TryStream>::Error>>>`[src]

Struct futures_util::stream::Once⎘[−][src]

Trait Implementations

impl<Fut: Debug> Debug for Once<Fut>[src]

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

impl<Fut: Future> FusedStream for Once<Fut>[src]

fn is_terminated(&self) -> bool[src]

impl<Fut: Future> Stream for Once<Fut>[src]

type Item = Fut::Output

fn poll_next( self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>>[src]

fn size_hint(&self) -> (usize, Option<usize>)[src]

impl<'__pin, Fut> Unpin for Once<Fut> where __Origin<'__pin, Fut>: Unpin, [src]

Auto Trait Implementations

impl<Fut> RefUnwindSafe for Once<Fut> where Fut: RefUnwindSafe,

impl<Fut> Send for Once<Fut> where Fut: Send,

impl<Fut> Sync for Once<Fut> where Fut: Sync,

impl<Fut> UnwindSafe for Once<Fut> where Fut: UnwindSafe,

Blanket Implementations

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

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

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

pub fn borrow(&self) -> &TⓘNotable traits for &'_ mut Fimpl<'_, F> Future for &'_ mut F where F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;[src]

Notable traits for &'_ mut F

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

pub fn borrow_mut(&mut self) -> &mut TⓘNotable traits for &'_ mut Fimpl<'_, F> Future for &'_ mut F where F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;[src]

Notable traits for &'_ mut F

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

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

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

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

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

type Error = Infallible

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

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

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

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

impl<S, T, E> TryStream for S where S: Stream<Item = Result<T, E>> + ?Sized, [src]

type Ok = T

type Error = E

pub fn try_poll_next( self: Pin<&mut S>, cx: &mut Context<'_>) -> Poll<Option<Result<<S as TryStream>::Ok, <S as TryStream>::Error>>>[src]

Struct futures_util::stream::Once[−][src]

`impl<Fut: Debug> Debug for Once<Fut>`[src]

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

`impl<Fut: Future> FusedStream for Once<Fut>`[src]

`fn is_terminated(&self) -> bool`[src]

`impl<Fut: Future> Stream for Once<Fut>`[src]

`type Item = Fut::Output`

`fn poll_next( self: Pin<&mut Self>, cx: &mut Context<'_> ) -> Poll<Option<Self::Item>>`[src]

`fn size_hint(&self) -> (usize, Option<usize>)`[src]

`impl<'pin, Fut> Unpin for Once<Fut> where Origin<'__pin, Fut>: Unpin,` [src]

`impl<Fut> RefUnwindSafe for Once<Fut> where Fut: RefUnwindSafe,`

`impl<Fut> Send for Once<Fut> where Fut: Send,`

`impl<Fut> Sync for Once<Fut> where Fut: Sync,`

`impl<Fut> UnwindSafe for Once<Fut> where Fut: UnwindSafe,`

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

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

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

`pub fn borrow(&self) -> &TⓘNotable traits for &'_ mut F impl<'_, F> Future for &'_ mut F where F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;`[src]

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

`pub fn borrow_mut(&mut self) -> &mut TⓘNotable traits for &'_ mut F impl<'_, F> Future for &'_ mut F where F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;`[src]

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

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

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

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

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

`type Error = Infallible`

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

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

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

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

`impl<S, T, E> TryStream for S where S: Stream<Item = Result<T, E>> + ?Sized,` [src]

`type Ok = T`

`type Error = E`

`pub fn try_poll_next( self: Pin<&mut S>, cx: &mut Context<'_> ) -> Poll<Option<Result<<S as TryStream>::Ok, <S as TryStream>::Error>>>`[src]