pub struct Promise<T> where
T: 'static + Send, { /* private fields */ }
Expand description
A Future that resolves when you call set
on its clone.
Uses Arc
internally.
All clones of this struct use the same inner struct on the heap.
You can call set
on any clone of this struct.
You can call set
once and await
once, obtaining the value.
Subsequent or concurrent awaits of the struct will wait forever.
Implementations
sourceimpl<T> Promise<T> where
T: 'static + Send,
impl<T> Promise<T> where
T: 'static + Send,
pub fn new() -> Promise<T>ⓘNotable traits for Promise<T>impl<T> Future for Promise<T> where
T: 'static + Send, type Output = T;
T: 'static + Send, type Output = T;
Trait Implementations
Auto Trait Implementations
impl<T> RefUnwindSafe for Promise<T>
impl<T> Send for Promise<T>
impl<T> Sync for Promise<T>
impl<T> Unpin for Promise<T>
impl<T> UnwindSafe for Promise<T>
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcepub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<F> IntoFuture for F where
F: Future,
impl<F> IntoFuture for F where
F: Future,
type Output = <F as Future>::Output
type Output = <F as Future>::Output
🔬 This is a nightly-only experimental API. (
into_future
)The output that the future will produce on completion.
type Future = F
type Future = F
🔬 This is a nightly-only experimental API. (
into_future
)Which kind of future are we turning this into?
sourcepub fn into_future(self) -> <F as IntoFuture>::Future
pub fn into_future(self) -> <F as IntoFuture>::Future
🔬 This is a nightly-only experimental API. (
into_future
)Creates a future from a value.
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcepub fn to_owned(&self) -> T
pub fn to_owned(&self) -> T
Creates owned data from borrowed data, usually by cloning. Read more
sourcepub fn clone_into(&self, target: &mut T)
pub fn clone_into(&self, target: &mut T)
🔬 This is a nightly-only experimental API. (
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more