Struct futures::future::WeakShared[−][src]

pub struct WeakShared<Fut>(_)
 where
    Fut: Future;

Expand description

A weak reference to a Shared that can be upgraded much like an Arc.

Implementations

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impl<Fut> WeakShared<Fut> where
    Fut: Future,

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pub fn upgrade(&self) -> Option<Shared<Fut>>

Attempts to upgrade this WeakShared into a Shared.

Returns None if all clones of the Shared have been dropped or polled to completion.

Trait Implementations

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impl<Fut> Clone for WeakShared<Fut> where
    Fut: Future,

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pub fn clone(&self) -> WeakShared<Fut>

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<Fut> Debug for WeakShared<Fut> where
    Fut: Future,

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

Formats the value using the given formatter. Read more

Auto Trait Implementations

impl<Fut> !RefUnwindSafe for WeakShared<Fut>

impl<Fut> Send for WeakShared<Fut> where
    Fut: Send,
    <Fut as Future>::Output: Send + Sync,

impl<Fut> Sync for WeakShared<Fut> where
    Fut: Send,
    <Fut as Future>::Output: Send + Sync,

impl<Fut> Unpin for WeakShared<Fut>

impl<Fut> !UnwindSafe for WeakShared<Fut>

Blanket Implementations

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

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

Performs the conversion.

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

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pub fn into(self) -> U

Performs the conversion.

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impl<T> ToOwned for T where
    T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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pub fn to_owned(&self) -> T

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

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pub fn clone_into(&self, target: &mut T)

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

recently added

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

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

type Error = Infallible

The type returned in the event of a conversion error.

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pub 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>,

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

The type returned in the event of a conversion error.

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

Performs the conversion.