[][src]Struct futures::future::LocalFutureObj

pub struct LocalFutureObj<'a, T> { /* fields omitted */ }

A custom trait object for polling futures, roughly akin to Box<dyn Future<Output = T> + 'a>.

This custom trait object was introduced as currently it is not possible to take dyn Trait by value and Box<dyn Trait> is not available in no_std contexts.

Methods

impl<'a, T> LocalFutureObj<'a, T>[src]

Important traits for LocalFutureObj<'_, T>
pub fn new<F>(f: F) -> LocalFutureObj<'a, T> where
    F: 'a + UnsafeFutureObj<'a, T>, 
[src]

Create a LocalFutureObj from a custom trait object representation.

Important traits for FutureObj<'_, T>
pub unsafe fn into_future_obj(self) -> FutureObj<'a, T>[src]

Converts the LocalFutureObj into a FutureObj To make this operation safe one has to ensure that the UnsafeFutureObj instance from which this LocalFutureObj was created actually implements Send.

Trait Implementations

impl<'_, T> Unpin for LocalFutureObj<'_, T>[src]

impl<'_, T> Future for LocalFutureObj<'_, T>[src]

type Output = T

The type of value produced on completion.

impl<'_, T> Debug for LocalFutureObj<'_, T>[src]

impl<'a> From<Pin<Box<dyn Future<Output = ()> + 'a>>> for LocalFutureObj<'a, ()>[src]

impl<'a, F> From<Box<F>> for LocalFutureObj<'a, ()> where
    F: 'a + Future<Output = ()>, 
[src]

impl<'a, F> From<Pin<Box<F>>> for LocalFutureObj<'a, ()> where
    F: 'a + Future<Output = ()>, 
[src]

impl<'a> From<Box<dyn Future<Output = ()> + 'a>> for LocalFutureObj<'a, ()>[src]

impl<'a, T> From<FutureObj<'a, T>> for LocalFutureObj<'a, T>[src]

impl<'_, T> Drop for LocalFutureObj<'_, T>[src]

Auto Trait Implementations

impl<'a, T> !Send for LocalFutureObj<'a, T>

impl<'a, T> !Sync for LocalFutureObj<'a, T>

impl<'a, T> !UnwindSafe for LocalFutureObj<'a, T>

impl<'a, T> !RefUnwindSafe for LocalFutureObj<'a, T>

Blanket Implementations

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

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

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

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

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> FutureExt for T where
    T: Future + ?Sized
[src]

impl<Fut> TryFutureExt for Fut where
    Fut: TryFuture + ?Sized
[src]