Ready in core::future - Rust
Description: A future that is immediately ready with a value.

# Struct Ready

1.48.0 · Source

    pub struct Ready<T>(/* private fields */);

Expand description

A future that is immediately ready with a value.

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

## Implementations§

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### impl<T> Ready<T>

1.82.0 · Source

#### pub 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§

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

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#### fn clone(&self) -> Ready<T> ⓘ

Returns a copy of the value. Read more
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#### fn clone_from(&mut self, source: &Self)

Performs copy-assignment from `source`. Read more
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### impl<T: Debug> Debug for Ready<T>

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

Formats the value using the given formatter. Read more
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### impl<T> Future for Ready<T>

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#### type Output = T

The type of value produced on completion.
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#### fn poll(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<T>

Attempts to resolve the future to a final value, registering the current task for wakeup if the value is not yet available. Read more
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### impl<T> Unpin for Ready<T>

## Auto Trait Implementations§

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### impl<T> Freeze for Ready<T>
where T: Freeze,

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### impl<T> RefUnwindSafe for Ready<T>
where T: RefUnwindSafe,

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### impl<T> Send for Ready<T>
where T: Send,

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### impl<T> Sync for Ready<T>
where T: Sync,

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### impl<T> UnwindSafe for Ready<T>
where T: UnwindSafe,

## Blanket Implementations§

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

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#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more
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### impl<T> Borrow<T> for T
where T: ?Sized,

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#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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### impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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### impl<T> CloneToUninit for T
where T: Clone,

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

🔬This is a nightly-only experimental API. (`clone_to_uninit` #126799)
Performs copy-assignment from `self` to `dest`. Read more
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### impl<T> From<T> for T

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#### fn from(t: T) -> T

Returns the argument unchanged.

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### impl<T, U> Into<U> for T
where U: From<T>,

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#### fn into(self) -> U

Calls `U::from(self)`.

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

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### impl<F> IntoFuture for F
where F: Future,

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

The output that the future will produce on completion.
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#### type IntoFuture = F

Which kind of future are we turning this into?
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#### fn into_future(self) -> <F as IntoFuture>::IntoFuture

Creates a future from a value. Read more
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### impl<T, U> TryFrom<U> for T
where U: Into<T>,

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#### type Error = Infallible

The type returned in the event of a conversion error.
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#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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### impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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#### type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.