ScopedFutureWithValue

future_local_storage::future

Struct ScopedFutureWithValue 

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pub struct ScopedFutureWithValue<T, F>
where
    T: Send + 'static,
    F: Future,
{ /* private fields */ }
Expand description

A Future that sets a value T of a future local for the future F during its execution.

This future also returns a future local value after execution.

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impl<T, F> ScopedFutureWithValue<T, F>
where T: Send, F: Future,

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pub fn discard_value(self) -> ScopedFuture<T, F> ⓘ

Discards the future local value from the future output.

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impl<T, F> Debug for ScopedFutureWithValue<T, F>
where T: Send + 'static + Debug, F: Future + Debug,

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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, F> Drop for ScopedFutureWithValue<T, F>
where T: Send + 'static, F: Future,

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fn drop(&mut self)

Executes the destructor for this type. Read more
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impl<T, F> From<ScopedFutureWithValue<T, F>> for ScopedFuture<T, F>
where T: Send, F: Future,

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fn from(value: ScopedFutureWithValue<T, F>) -> Self

Converts to this type from the input type.
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impl<T, F> Future for ScopedFutureWithValue<T, F>
where T: Send, F: Future,

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type Output = (T, <F as Future>::Output)

The type of value produced on completion.
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fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output>

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<'pin, T, F> Unpin for ScopedFutureWithValue<T, F>
where T: Send + 'static, F: Future, PinnedFieldsOf<__ScopedFutureWithValue<'pin, T, F>>: Unpin,

Auto Trait Implementations§

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impl<T, F> Freeze for ScopedFutureWithValue<T, F>
where F: Freeze, T: Freeze,

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impl<T, F> !RefUnwindSafe for ScopedFutureWithValue<T, F>

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impl<T, F> Send for ScopedFutureWithValue<T, F>
where F: Send,

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impl<T, F> Sync for ScopedFutureWithValue<T, F>
where F: Sync, T: Sync,

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impl<T, F> !UnwindSafe for ScopedFutureWithValue<T, F>

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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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<F> FutureLocalStorage for F
where F: Future,

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fn with_scope<T, S>( self, scope: &'static S, value: T, ) -> ScopedFutureWithValue<T, F> ⓘ
where T: Send, S: AsRef<FutureLocalKey<T>>,

Sets a given value as the future local value of this future. Read more
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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.