Struct `Ready`

#[must_use = "futures do nothing unless you `.await` or poll them"]
pub struct Ready<T>(pub(in ::future::ready) Option<T>);

A future that is immediately ready with a value.

This struct is created by [ready()]. See its documentation for more.

Fields

0: Option<T>

Implementations

`impl<T> Ready<T>`

fn into_inner(self) -> T

Consumes the Ready, returning the wrapped value.

Panics

Will panic if this Ready was already polled to completion.

Examples

use std::future;

let a = future::ready(1);
assert_eq!(a.into_inner(), 1);

Trait Implementations

`impl<T> Future for Ready<T>`

type Output = T;
fn poll(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<T>

`impl<T> Unpin for Ready<T>`

`impl<T: Clone> Clone for Ready<T>`

fn clone(&self) -> Self

`impl<T: Debug> Debug for Ready<T>`

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Auto Trait Implementations

`impl<T> Freeze for Ready<T> where Option<T>: Freeze,`

`impl<T> RefUnwindSafe for Ready<T> where Option<T>: RefUnwindSafe,`

`impl<T> Send for Ready<T> where Option<T>: Send,`

`impl<T> Sync for Ready<T> where Option<T>: Sync,`

`impl<T> UnsafeUnpin for Ready<T> where Option<T>: UnsafeUnpin,`

`impl<T> UnwindSafe for Ready<T> where Option<T>: UnwindSafe,`

Blanket Implementations

`impl<F> IntoFuture for Ready<T> where F: Future,`

type Output = <F as Future>::Output;
type IntoFuture = F;
fn into_future(self) -> <F as IntoFuture>::IntoFuture

`impl<T> Any for Ready<T> where T: 'static + ?Sized,`

fn type_id(&self) -> TypeId

`impl<T> Borrow<T> for Ready<T> where T: ?Sized,`

fn borrow(&self) -> &T

`impl<T> BorrowMut<T> for Ready<T> where T: ?Sized,`

fn borrow_mut(&mut self) -> &mut T

`impl<T> CloneToUninit for Ready<T> where T: Clone,`

unsafe fn clone_to_uninit(&self, dest: *mut u8)

`impl<T> From<T> for Ready<T>`

fn from(t: T) -> T: Returns the argument unchanged.

`impl<T> SizeHint for Ready<T> where T: ?Sized,`

fn lower_bound(&self) -> usize
fn upper_bound(&self) -> Option<usize>

`impl<T> SizedTypeProperties for Ready<T>`

`impl<T, U> Into for Ready<T> where U: From<T>,`

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

`impl<T, U> TryFrom for Ready<T> where U: Into<T>,`

type Error = never;
fn try_from(value: U) -> Result<T, never>

`impl<T, U> TryInto for Ready<T> where U: TryFrom<T>,`

type Error = >::Error;
fn try_into(self) -> Result<U, >::Error>