Struct TryAsyncStream

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pub struct TryAsyncStream<T, E, U> { /* private fields */ }
Expand description

A Stream created from a fallible, asynchronous generator-like function.

To create a TryAsyncStream, use the try_async_stream function. See also crate::AsyncStream.

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impl<T, E, U> FusedStream for TryAsyncStream<T, E, U>
where U: Future<Output = Result<(), E>>,

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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, E, U> Stream for TryAsyncStream<T, E, U>
where U: Future<Output = Result<(), E>>,

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type Item = Result<T, E>

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
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impl<'__pin, T, E, U> Unpin for TryAsyncStream<T, E, U>
where PinnedFieldsOf<__Origin<'__pin, T, E, U>>: Unpin,

Auto Trait Implementations§

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impl<T, E, U> Freeze for TryAsyncStream<T, E, U>
where U: Freeze,

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impl<T, E, U> !RefUnwindSafe for TryAsyncStream<T, E, U>

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impl<T, E, U> Send for TryAsyncStream<T, E, U>
where U: Send, E: Send, T: Send,

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impl<T, E, U> Sync for TryAsyncStream<T, E, U>
where U: Sync, E: Sync, T: Send,

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impl<T, E, U> !UnwindSafe for TryAsyncStream<T, E, U>

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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