[−][src]Struct futures_util::future::Lazy

#[must_use = "futures do nothing unless you `.await` or poll them"]pub struct Lazy<F> { /* fields omitted */ }
[−]

Future for the lazy function.

Trait Implementations

impl<F: Debug> Debug for Lazy<F>[src][+]

impl<F, R> FusedFuture for Lazy<F> where
    F: FnOnce(&mut Context) -> R, [src][+]

impl<F, R> Future for Lazy<F> where
    F: FnOnce(&mut Context) -> R, [src][+]

type Output = R

The type of value produced on completion.

impl<F> Unpin for Lazy<F>[src]

Auto Trait Implementations

impl<F> RefUnwindSafe for Lazy<F> where
    F: RefUnwindSafe, 

impl<F> Send for Lazy<F> where
    F: Send, 

impl<F> Sync for Lazy<F> where
    F: Sync, 

impl<F> UnwindSafe for Lazy<F> where
    F: UnwindSafe, 

Blanket Implementations

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

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

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

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

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

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?

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<F, T, E> TryFuture for F where
    F: Future<Output = 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

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.