Struct csv_async::DeserializeRecordsIntoStream [−][src]
pub struct DeserializeRecordsIntoStream<'r, R, D> where
R: AsyncRead + Unpin + Send + Sync, { /* fields omitted */ }A owned stream of deserialized records.
The lifetime parameter 'r refers to the lifetime of the underlying CSV Reader.
type, and D refers to the type that this stream will deserialize a record into.
Trait Implementations
impl<'r, R, D: DeserializeOwned + 'r> Stream for DeserializeRecordsIntoStream<'r, R, D> where
R: AsyncRead + Unpin + Send + Sync + 'r, [src][+]
R: AsyncRead + Unpin + Send + Sync + 'r,
type Item = Result<D>
Values yielded by the stream.
fn poll_next(
self: Pin<&mut Self>,
cx: &mut Context<'_>
) -> Poll<Option<Self::Item>>[src][−]
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
pub fn size_hint(&self) -> (usize, Option<usize>)[−]
Returns the bounds on the remaining length of the stream. Read more
Auto Trait Implementations
impl<'r, R, D> !RefUnwindSafe for DeserializeRecordsIntoStream<'r, R, D>
impl<'r, R, D> Send for DeserializeRecordsIntoStream<'r, R, D>
impl<'r, R, D> Sync for DeserializeRecordsIntoStream<'r, R, D>
impl<'r, R, D> Unpin for DeserializeRecordsIntoStream<'r, R, D>
impl<'r, R, D> !UnwindSafe for DeserializeRecordsIntoStream<'r, R, D>
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized, [src][+]
T: 'static + ?Sized,
pub fn type_id(&self) -> TypeId[src][−]
Gets the TypeId of self. Read more
impl<T> Borrow<T> for T where
T: ?Sized, [src][+]
T: ?Sized,
pub fn borrow(&self) -> &T[src][−]
Immutably borrows from an owned value. Read more
impl<T> BorrowMut<T> for T where
T: ?Sized, [src][+]
T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T[src][−]
Mutably borrows from an owned value. Read more
impl<T> From<T> for T[src][+]
impl<T, U> Into<U> for T where
U: From<T>, [src][+]
U: From<T>,
impl<T> StreamExt for T where
T: Stream + ?Sized, [+]
T: Stream + ?Sized,
pub fn next(&mut self) -> Next<'_, Self> where
Self: Unpin, [−]
Self: Unpin,
Creates a future that resolves to the next item in the stream. Read more
pub fn into_future(self) -> StreamFuture<Self> where
Self: Unpin, [−]
Self: Unpin,
Converts this stream into a future of (next_item, tail_of_stream).
If the stream terminates, then the next item is None. Read more
pub fn map<T, F>(self, f: F) -> Map<Self, F> where
F: FnMut(Self::Item) -> T, [−]
F: FnMut(Self::Item) -> T,
Maps this stream’s items to a different type, returning a new stream of the resulting type. Read more
pub fn enumerate(self) -> Enumerate<Self>[−]
Creates a stream which gives the current iteration count as well as the next value. Read more
pub fn filter<Fut, F>(self, f: F) -> Filter<Self, Fut, F> where
Fut: Future<Output = bool>,
F: FnMut(&Self::Item) -> Fut, [−]
Fut: Future<Output = bool>,
F: FnMut(&Self::Item) -> Fut,
Filters the values produced by this stream according to the provided asynchronous predicate. Read more
pub fn filter_map<Fut, T, F>(self, f: F) -> FilterMap<Self, Fut, F> where
Fut: Future<Output = Option<T>>,
F: FnMut(Self::Item) -> Fut, [−]
Fut: Future<Output = Option<T>>,
F: FnMut(Self::Item) -> Fut,
Filters the values produced by this stream while simultaneously mapping them to a different type according to the provided asynchronous closure. Read more
pub fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> where
Fut: Future,
F: FnMut(Self::Item) -> Fut, [−]
Fut: Future,
F: FnMut(Self::Item) -> Fut,
Computes from this stream’s items new items of a different type using an asynchronous closure. Read more
pub fn collect<C>(self) -> Collect<Self, C> where
C: Default + Extend<Self::Item>, [−]
C: Default + Extend<Self::Item>,
Transforms a stream into a collection, returning a future representing the result of that computation. Read more
pub fn unzip<A, B, FromA, FromB>(self) -> Unzip<Self, FromA, FromB> where
Self: Stream<Item = (A, B)>,
FromA: Default + Extend<A>,
FromB: Default + Extend<B>, [−]
Self: Stream<Item = (A, B)>,
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
Converts a stream of pairs into a future, which resolves to pair of containers. Read more
pub fn concat(self) -> Concat<Self> where
Self::Item: Extend<<Self::Item as IntoIterator>::Item>,
Self::Item: IntoIterator,
Self::Item: Default, [−]
Self::Item: Extend<<Self::Item as IntoIterator>::Item>,
Self::Item: IntoIterator,
Self::Item: Default,
Concatenate all items of a stream into a single extendable destination, returning a future representing the end result. Read more
pub fn cycle(self) -> Cycle<Self> where
Self: Clone, [−]
Self: Clone,
Repeats a stream endlessly. Read more
pub fn fold<T, Fut, F>(self, init: T, f: F) -> Fold<Self, Fut, T, F> where
Fut: Future<Output = T>,
F: FnMut(T, Self::Item) -> Fut, [−]
Fut: Future<Output = T>,
F: FnMut(T, Self::Item) -> Fut,
Execute an accumulating asynchronous computation over a stream, collecting all the values into one final result. Read more
pub fn flatten(self) -> Flatten<Self> where
Self::Item: Stream, [−]
Self::Item: Stream,
Flattens a stream of streams into just one continuous stream. Read more
pub fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F> where
U: Stream,
F: FnMut(Self::Item) -> U, [−]
U: Stream,
F: FnMut(Self::Item) -> U,
Maps a stream like [StreamExt::map] but flattens nested Streams. Read more
pub fn scan<S, B, Fut, F>(self, initial_state: S, f: F) -> Scan<Self, S, Fut, F> where
Fut: Future<Output = Option<B>>,
F: FnMut(&mut S, Self::Item) -> Fut, [−]
Fut: Future<Output = Option<B>>,
F: FnMut(&mut S, Self::Item) -> Fut,
Combinator similar to [StreamExt::fold] that holds internal state
and produces a new stream. Read more
pub fn skip_while<Fut, F>(self, f: F) -> SkipWhile<Self, Fut, F> where
Fut: Future<Output = bool>,
F: FnMut(&Self::Item) -> Fut, [−]
Fut: Future<Output = bool>,
F: FnMut(&Self::Item) -> Fut,
Skip elements on this stream while the provided asynchronous predicate
resolves to true. Read more
pub fn take_while<Fut, F>(self, f: F) -> TakeWhile<Self, Fut, F> where
Fut: Future<Output = bool>,
F: FnMut(&Self::Item) -> Fut, [−]
Fut: Future<Output = bool>,
F: FnMut(&Self::Item) -> Fut,
Take elements from this stream while the provided asynchronous predicate
resolves to true. Read more
pub fn take_until<Fut>(self, fut: Fut) -> TakeUntil<Self, Fut> where
Fut: Future, [−]
Fut: Future,
Take elements from this stream until the provided future resolves. Read more
pub fn for_each<Fut, F>(self, f: F) -> ForEach<Self, Fut, F> where
Fut: Future<Output = ()>,
F: FnMut(Self::Item) -> Fut, [−]
Fut: Future<Output = ()>,
F: FnMut(Self::Item) -> Fut,
Runs this stream to completion, executing the provided asynchronous closure for each element on the stream. Read more
pub fn for_each_concurrent<Fut, F>(
self,
limit: impl Into<Option<usize>>,
f: F
) -> ForEachConcurrent<Self, Fut, F> where
Fut: Future<Output = ()>,
F: FnMut(Self::Item) -> Fut, [−]
self,
limit: impl Into<Option<usize>>,
f: F
) -> ForEachConcurrent<Self, Fut, F> where
Fut: Future<Output = ()>,
F: FnMut(Self::Item) -> Fut,
Runs this stream to completion, executing the provided asynchronous closure for each element on the stream concurrently as elements become available. Read more
pub fn take(self, n: usize) -> Take<Self>[−]
Creates a new stream of at most n items of the underlying stream. Read more
pub fn skip(self, n: usize) -> Skip<Self>[−]
Creates a new stream which skips n items of the underlying stream. Read more
pub fn fuse(self) -> Fuse<Self>[−]
Fuse a stream such that poll_next will never
again be called once it has finished. This method can be used to turn
any Stream into a FusedStream. Read more
pub fn by_ref(&mut self) -> &mut Self[−]
Borrows a stream, rather than consuming it. Read more
pub fn catch_unwind(self) -> CatchUnwind<Self> where
Self: UnwindSafe, [−]
Self: UnwindSafe,
Catches unwinding panics while polling the stream. Read more
pub fn boxed<'a>(
self
) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a + Send, Global>> where
Self: Send + 'a, [−]
self
) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a + Send, Global>> where
Self: Send + 'a,
Wrap the stream in a Box, pinning it. Read more
pub fn boxed_local<'a>(
self
) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a, Global>> where
Self: 'a, [−]
self
) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a, Global>> where
Self: 'a,
Wrap the stream in a Box, pinning it. Read more
pub fn buffered(self, n: usize) -> Buffered<Self> where
Self::Item: Future, [−]
Self::Item: Future,
An adaptor for creating a buffered list of pending futures. Read more
pub fn buffer_unordered(self, n: usize) -> BufferUnordered<Self> where
Self::Item: Future, [−]
Self::Item: Future,
An adaptor for creating a buffered list of pending futures (unordered). Read more
pub fn zip<St>(self, other: St) -> Zip<Self, St> where
St: Stream, [−]
St: Stream,
An adapter for zipping two streams together. Read more
pub fn chain<St>(self, other: St) -> Chain<Self, St> where
St: Stream<Item = Self::Item>, [−]
St: Stream<Item = Self::Item>,
Adapter for chaining two streams. Read more
pub fn peekable(self) -> Peekable<Self>[−]
Creates a new stream which exposes a peek method. Read more
pub fn chunks(self, capacity: usize) -> Chunks<Self>[−]
An adaptor for chunking up items of the stream inside a vector. Read more
pub fn ready_chunks(self, capacity: usize) -> ReadyChunks<Self>[−]
An adaptor for chunking up ready items of the stream inside a vector. Read more
pub fn forward<S>(self, sink: S) -> Forward<Self, S> where
Self: TryStream,
S: Sink<Self::Ok, Error = Self::Error>, [−]
Self: TryStream,
S: Sink<Self::Ok, Error = Self::Error>,
A future that completes after the given stream has been fully processed into the sink and the sink has been flushed and closed. Read more
pub fn split<Item>(self) -> (SplitSink<Self, Item>, SplitStream<Self>) where
Self: Sink<Item>, [−]
Self: Sink<Item>,
Splits this Stream + Sink object into separate Sink and Stream
objects. Read more
pub fn inspect<F>(self, f: F) -> Inspect<Self, F> where
F: FnMut(&Self::Item), [−]
F: FnMut(&Self::Item),
Do something with each item of this stream, afterwards passing it on. Read more
pub fn left_stream<B>(self) -> Either<Self, B> where
B: Stream<Item = Self::Item>, [−]
B: Stream<Item = Self::Item>,
Wrap this stream in an Either stream, making it the left-hand variant
of that Either. Read more
pub fn right_stream<B>(self) -> Either<B, Self> where
B: Stream<Item = Self::Item>, [−]
B: Stream<Item = Self::Item>,
Wrap this stream in an Either stream, making it the right-hand variant
of that Either. Read more
pub fn poll_next_unpin(
&mut self,
cx: &mut Context<'_>
) -> Poll<Option<Self::Item>> where
Self: Unpin, [−]
&mut self,
cx: &mut Context<'_>
) -> Poll<Option<Self::Item>> where
Self: Unpin,
pub fn select_next_some(&mut self) -> SelectNextSome<'_, Self> where
Self: Unpin + FusedStream, [−]
Self: Unpin + FusedStream,
impl<T, U> TryFrom<U> for T where
U: Into<T>, [src][+]
U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src][−]
Performs the conversion.
impl<T, U> TryInto<U> for T where
U: TryFrom<T>, [src][+]
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src][−]
Performs the conversion.
impl<S, T, E> TryStream for S where
S: Stream<Item = Result<T, E>> + ?Sized, [+]
S: Stream<Item = Result<T, E>> + ?Sized,
type Ok = T
The type of successful values yielded by this future
type Error = E
The type of failures yielded by this future
pub fn try_poll_next(
self: Pin<&mut S>,
cx: &mut Context<'_>
) -> Poll<Option<Result<<S as TryStream>::Ok, <S as TryStream>::Error>>>[−]
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
impl<S> TryStreamExt for S where
S: TryStream + ?Sized, [+]
S: TryStream + ?Sized,
pub fn err_into<E>(self) -> ErrInto<Self, E> where
Self::Error: Into<E>, [−]
Self::Error: Into<E>,
Wraps the current stream in a new stream which converts the error type into the one provided. Read more
pub fn map_ok<T, F>(self, f: F) -> MapOk<Self, F> where
F: FnMut(Self::Ok) -> T, [−]
F: FnMut(Self::Ok) -> T,
Wraps the current stream in a new stream which maps the success value using the provided closure. Read more
pub fn map_err<E, F>(self, f: F) -> MapErr<Self, F> where
F: FnMut(Self::Error) -> E, [−]
F: FnMut(Self::Error) -> E,
Wraps the current stream in a new stream which maps the error value using the provided closure. Read more
pub fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F> where
Fut: TryFuture<Error = Self::Error>,
F: FnMut(Self::Ok) -> Fut, [−]
Fut: TryFuture<Error = Self::Error>,
F: FnMut(Self::Ok) -> Fut,
Chain on a computation for when a value is ready, passing the successful
results to the provided closure f. Read more
pub fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F> where
Fut: TryFuture<Ok = Self::Ok>,
F: FnMut(Self::Error) -> Fut, [−]
Fut: TryFuture<Ok = Self::Ok>,
F: FnMut(Self::Error) -> Fut,
Chain on a computation for when an error happens, passing the
erroneous result to the provided closure f. Read more
pub fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F> where
F: FnMut(&Self::Ok), [−]
F: FnMut(&Self::Ok),
Do something with the success value of this stream, afterwards passing it on. Read more
pub fn inspect_err<F>(self, f: F) -> InspectErr<Self, F> where
F: FnMut(&Self::Error), [−]
F: FnMut(&Self::Error),
Do something with the error value of this stream, afterwards passing it on. Read more
pub fn into_stream(self) -> IntoStream<Self>[−]
pub fn try_next(&mut self) -> TryNext<'_, Self> where
Self: Unpin, [−]
Self: Unpin,
Creates a future that attempts to resolve the next item in the stream. If an error is encountered before the next item, the error is returned instead. Read more
pub fn try_for_each<Fut, F>(self, f: F) -> TryForEach<Self, Fut, F> where
Fut: TryFuture<Ok = (), Error = Self::Error>,
F: FnMut(Self::Ok) -> Fut, [−]
Fut: TryFuture<Ok = (), Error = Self::Error>,
F: FnMut(Self::Ok) -> Fut,
Attempts to run this stream to completion, executing the provided asynchronous closure for each element on the stream. Read more
pub fn try_skip_while<Fut, F>(self, f: F) -> TrySkipWhile<Self, Fut, F> where
Fut: TryFuture<Ok = bool, Error = Self::Error>,
F: FnMut(&Self::Ok) -> Fut, [−]
Fut: TryFuture<Ok = bool, Error = Self::Error>,
F: FnMut(&Self::Ok) -> Fut,
Skip elements on this stream while the provided asynchronous predicate
resolves to true. Read more
pub fn try_take_while<Fut, F>(self, f: F) -> TryTakeWhile<Self, Fut, F> where
Fut: TryFuture<Ok = bool, Error = Self::Error>,
F: FnMut(&Self::Ok) -> Fut, [−]
Fut: TryFuture<Ok = bool, Error = Self::Error>,
F: FnMut(&Self::Ok) -> Fut,
Take elements on this stream while the provided asynchronous predicate
resolves to true. Read more
pub fn try_for_each_concurrent<Fut, F>(
self,
limit: impl Into<Option<usize>>,
f: F
) -> TryForEachConcurrent<Self, Fut, F> where
Fut: Future<Output = Result<(), Self::Error>>,
F: FnMut(Self::Ok) -> Fut, [−]
self,
limit: impl Into<Option<usize>>,
f: F
) -> TryForEachConcurrent<Self, Fut, F> where
Fut: Future<Output = Result<(), Self::Error>>,
F: FnMut(Self::Ok) -> Fut,
Attempts to run this stream to completion, executing the provided asynchronous closure for each element on the stream concurrently as elements become available, exiting as soon as an error occurs. Read more
pub fn try_collect<C>(self) -> TryCollect<Self, C> where
C: Default + Extend<Self::Ok>, [−]
C: Default + Extend<Self::Ok>,
Attempt to transform a stream into a collection, returning a future representing the result of that computation. Read more
pub fn try_filter<Fut, F>(self, f: F) -> TryFilter<Self, Fut, F> where
Fut: Future<Output = bool>,
F: FnMut(&Self::Ok) -> Fut, [−]
Fut: Future<Output = bool>,
F: FnMut(&Self::Ok) -> Fut,
Attempt to filter the values produced by this stream according to the provided asynchronous closure. Read more
pub fn try_filter_map<Fut, F, T>(self, f: F) -> TryFilterMap<Self, Fut, F> where
Fut: TryFuture<Ok = Option<T>, Error = Self::Error>,
F: FnMut(Self::Ok) -> Fut, [−]
Fut: TryFuture<Ok = Option<T>, Error = Self::Error>,
F: FnMut(Self::Ok) -> Fut,
Attempt to filter the values produced by this stream while simultaneously mapping them to a different type according to the provided asynchronous closure. Read more
pub fn try_flatten(self) -> TryFlatten<Self> where
Self::Ok: TryStream,
<Self::Ok as TryStream>::Error: From<Self::Error>, [−]
Self::Ok: TryStream,
<Self::Ok as TryStream>::Error: From<Self::Error>,
Flattens a stream of streams into just one continuous stream. Read more
pub fn try_fold<T, Fut, F>(self, init: T, f: F) -> TryFold<Self, Fut, T, F> where
Fut: TryFuture<Ok = T, Error = Self::Error>,
F: FnMut(T, Self::Ok) -> Fut, [−]
Fut: TryFuture<Ok = T, Error = Self::Error>,
F: FnMut(T, Self::Ok) -> Fut,
Attempt to execute an accumulating asynchronous computation over a stream, collecting all the values into one final result. Read more
pub fn try_concat(self) -> TryConcat<Self> where
Self::Ok: Extend<<Self::Ok as IntoIterator>::Item>,
Self::Ok: IntoIterator,
Self::Ok: Default, [−]
Self::Ok: Extend<<Self::Ok as IntoIterator>::Item>,
Self::Ok: IntoIterator,
Self::Ok: Default,
Attempt to concatenate all items of a stream into a single extendable destination, returning a future representing the end result. Read more
pub fn try_buffer_unordered(self, n: usize) -> TryBufferUnordered<Self> where
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error, [−]
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,
Attempt to execute several futures from a stream concurrently (unordered). Read more
pub fn try_buffered(self, n: usize) -> TryBuffered<Self> where
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error, [−]
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,
Attempt to execute several futures from a stream concurrently. Read more
pub fn try_poll_next_unpin(
&mut self,
cx: &mut Context<'_>
) -> Poll<Option<Result<Self::Ok, Self::Error>>> where
Self: Unpin, [−]
&mut self,
cx: &mut Context<'_>
) -> Poll<Option<Result<Self::Ok, Self::Error>>> where
Self: Unpin,
pub fn into_async_read(self) -> IntoAsyncRead<Self> where
Self: TryStreamExt<Error = Error> + Unpin,
Self::Ok: AsRef<[u8]>, [−]
Self: TryStreamExt<Error = Error> + Unpin,
Self::Ok: AsRef<[u8]>,