[−][src]Struct futures_core::future::FutureObj

pub struct FutureObj<'a, T>(_);

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

You should generally not need to use this type outside of no_std or when implementing Spawn, consider using BoxFuture instead.

Methods

`impl<'a, T> FutureObj<'a, T>`[src]

ⓘImportant traits for FutureObj<'_, T>
Important traits for FutureObj<'_, T>
`impl<T, '_> Future for FutureObj<'_, T> type Output = T;`
`pub fn new<F: UnsafeFutureObj<'a, T> + Send>(f: F) -> FutureObj<'a, T>`[src]

Create a FutureObj from a custom trait object representation.

Trait Implementations

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

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

ⓘImportant traits for LocalFutureObj<'_, T>
Important traits for LocalFutureObj<'_, T>
`impl<T, '_> Future for LocalFutureObj<'_, T> type Output = T;`
`fn from(f: FutureObj<'a, T>) -> LocalFutureObj<'a, T>`[src]

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

`fn from(boxed: Box<F>) -> Self`[src]

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

`fn from(boxed: Box<dyn Future<Output = ()> + Send + 'a>) -> Self`[src]

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

`fn from(boxed: Pin<Box<F>>) -> Self`[src]

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

`fn from(boxed: Pin<Box<dyn Future<Output = ()> + Send + 'a>>) -> Self`[src]

`impl<T, '_> Send for FutureObj<'_, T>`[src]

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

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

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

`type Output = T`

The type of value produced on completion.

`fn poll(self: Pin<&mut Self>, cx: &mut Context) -> Poll<T>`[src]

Auto Trait Implementations

`impl<'a, T> !Sync for FutureObj<'a, T>`

Blanket Implementations

`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

`fn try_poll(Pin<&mut F>, &mut Context) -> Poll<<F as Future>::Output>`[src]

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

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

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

`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.

`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.

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

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

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

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

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

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

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

[−][src]Struct futures_core::future::FutureObj

Methods

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

ⓘImportant traits for FutureObj<'_, T>Important traits for FutureObj<'_, T>impl<T, '_> Future for FutureObj<'_, T> type Output = T;pub fn new<F: UnsafeFutureObj<'a, T> + Send>(f: F) -> FutureObj<'a, T>[src]

Important traits for FutureObj<'_, T>

Trait Implementations

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

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

ⓘImportant traits for LocalFutureObj<'_, T>Important traits for LocalFutureObj<'_, T>impl<T, '_> Future for LocalFutureObj<'_, T> type Output = T;fn from(f: FutureObj<'a, T>) -> LocalFutureObj<'a, T>[src]

Important traits for LocalFutureObj<'_, T>

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

fn from(boxed: Box<F>) -> Self[src]

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

fn from(boxed: Box<dyn Future<Output = ()> + Send + 'a>) -> Self[src]

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

fn from(boxed: Pin<Box<F>>) -> Self[src]

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

fn from(boxed: Pin<Box<dyn Future<Output = ()> + Send + 'a>>) -> Self[src]

impl<T, '_> Send for FutureObj<'_, T>[src]

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

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

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

type Output = T

fn poll(self: Pin<&mut Self>, cx: &mut Context) -> Poll<T>[src]

Auto Trait Implementations

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

Blanket Implementations

impl<F, T, E> TryFuture for F where F: Future<Output = Result<T, E>> + ?Sized, [src]

type Ok = T

type Error = E

fn try_poll(Pin<&mut F>, &mut Context) -> Poll<<F as Future>::Output>[src]

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

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

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

fn into(self) -> U[src]

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

type Error = Infallible

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

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

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

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

Important traits for &'_ mut F

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

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