std::future::Pending - Rust
Description: API documentation for the Rust `Pending` struct in crate `std`.
Keywords: rust, rustlang, rust-lang, Pending

# 1.48.0[−][src]Struct std::future::Pending

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

Creates a future which never resolves, representing a computation that never finishes.

This `struct` is created by `pending()`. See its documentation for more.

## Trait Implementations

### `impl<T> Clone for Pending<T>`[src]

#### `pub fn clone(&self) -> Pending<T>ⓘ

### Notable traits for Pending<T>

`impl<T> Future for Pending<T> type Output = T;`
`[src]

Returns a copy of the value. Read more

#### `pub fn clone_from(&mut self, source: &Self)`1.0.0[src]

Performs copy-assignment from `source`. Read more

### `impl<T> Debug for Pending<T>`[src]

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

Formats the value using the given formatter. Read more

### `impl<T> Future for Pending<T>`[src]

#### `type Output = T`

The type of value produced on completion.

#### `pub fn poll(self: Pin<&mut Pending<T>>, &mut Context<'_>) -> Poll<T>`[src]

Attempt to resolve the future to a final value, registering the current task for wakeup if the value is not yet available. Read more

### `impl<T> Unpin for Pending<T>`[src]

## Auto Trait Implementations

### `impl<T> RefUnwindSafe for Pending<T> where
T: RefUnwindSafe,` [src]

### `impl<T> Send for Pending<T> where
T: Send,` [src]

### `impl<T> Sync for Pending<T> where
T: Sync,` [src]

### `impl<T> UnwindSafe for Pending<T> where
T: UnwindSafe,` [src]

## Blanket Implementations

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

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

Gets the `TypeId` of `self`. Read more

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

#### `pub fn borrow(&self) -> &Tⓘ

### Notable traits for &'_ mut I

`impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W`
`[src]

Immutably borrows from an owned value. Read more

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

#### `pub fn borrow_mut(&mut self) -> &mut Tⓘ

### Notable traits for &'_ mut I

`impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W`
`[src]

Mutably borrows from an owned value. Read more

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

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

Performs the conversion.

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

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

Performs the conversion.

### `impl<F> IntoFuture for F where
F: Future,` [src]

#### `type Output = <F as Future>::Output`

🔬 This is a nightly-only experimental API. (`into_future` #67644)

The output that the future will produce on completion.

#### `type Future = F`

🔬 This is a nightly-only experimental API. (`into_future` #67644)

Which kind of future are we turning this into?

#### `pub fn into_future(self) -> <F as IntoFuture>::Future`[src]

🔬 This is a nightly-only experimental API. (`into_future` #67644)

Creates a future from a value.

### `impl<T> ToOwned for T where
T: Clone,` [src]

#### `type Owned = T`

The resulting type after obtaining ownership.

#### `pub fn to_owned(&self) -> T`[src]

Creates owned data from borrowed data, usually by cloning. Read more

#### `pub fn clone_into(&self, target: &mut T)`[src]

🔬 This is a nightly-only experimental API. (`toowned_clone_into` #41263)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

### `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.

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

Performs the conversion.

### `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.

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

Performs the conversion.