[][src]Struct futures::stream::Once

#[must_use = "streams do nothing unless polled"]
pub struct Once<T, E>(_);

A stream which emits single element and then EOF.

This stream will never block and is always ready.

Trait Implementations

impl<T, E> Stream for Once<T, E>[src]

type Item = T

The type of item this stream will yield on success.

type Error = E

The type of error this stream may generate.

impl<T: Debug, E: Debug> Debug for Once<T, E>[src]

Auto Trait Implementations

impl<T, E> Unpin for Once<T, E> where
    E: Unpin,
    T: Unpin

impl<T, E> Send for Once<T, E> where
    E: Send,
    T: Send

impl<T, E> Sync for Once<T, E> where
    E: Sync,
    T: Sync

impl<T, E> UnwindSafe for Once<T, E> where
    E: UnwindSafe,
    T: UnwindSafe

impl<T, E> RefUnwindSafe for Once<T, E> where
    E: RefUnwindSafe,
    T: RefUnwindSafe

Blanket Implementations

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

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.

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

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.

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

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

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