Struct LocalAsyncIter

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pub struct LocalAsyncIter<'a, T>(/* private fields */);
Expand description

Non-Send stream implemented using async functions.

This type does not implement Send.

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impl<'a, T: 'a> LocalAsyncIter<'a, T>

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pub fn new<Fut: Future<Output = ()> + 'a>( f: impl FnOnce(LocalAsyncIterContext<T>) -> Fut, ) -> Self

Create a stream from an asynchronous function.

§Example
use yield_return::LocalAsyncIter;
let iter = LocalAsyncIter::new(|mut y| async move {
    y.ret(1).await;
    y.ret(2).await;
});
let list: Vec<_> = futures::StreamExt::collect(iter).await;
assert_eq!(list, vec![1, 2]);

Trait Implementations§

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impl<T> FusedStream for LocalAsyncIter<'_, T>

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fn is_terminated(&self) -> bool

Returns true if the stream should no longer be polled.
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impl<T> Stream for LocalAsyncIter<'_, T>

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type Item = T

Values yielded by the stream.
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fn poll_next( self: Pin<&mut Self>, cx: &mut Context<'_>, ) -> Poll<Option<Self::Item>>

Attempt to pull out the next value of this stream, registering the current task for wakeup if the value is not yet available, and returning None if the stream is exhausted. Read more
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fn size_hint(&self) -> (usize, Option<usize>)

Returns the bounds on the remaining length of the stream. Read more

Auto Trait Implementations§

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impl<'a, T> Freeze for LocalAsyncIter<'a, T>

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impl<'a, T> !RefUnwindSafe for LocalAsyncIter<'a, T>

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impl<'a, T> !Send for LocalAsyncIter<'a, T>

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impl<'a, T> !Sync for LocalAsyncIter<'a, T>

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impl<'a, T> Unpin for LocalAsyncIter<'a, T>

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impl<'a, T> !UnwindSafe for LocalAsyncIter<'a, T>

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> 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<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.
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impl<S, T, E> TryStream for S
where S: Stream<Item = Result<T, E>> + ?Sized,

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type Ok = T

The type of successful values yielded by this future
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type Error = E

The type of failures yielded by this future
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fn try_poll_next( self: Pin<&mut S>, cx: &mut Context<'_>, ) -> Poll<Option<Result<<S as TryStream>::Ok, <S as TryStream>::Error>>>

Poll this TryStream as if it were a Stream. Read more