Struct polkadot_node_subsystem::gen::metered::UnboundedMeteredReceiver

impl<T> UnboundedMeteredReceiver<T>

pub fn meter(&self) -> &Meter

Get an updated accessor object for all metrics collected.

pub fn try_next(&mut self) -> Result<Option<T>, TryRecvError>

Attempt to receive the next item.

Methods from Deref<Target = UnboundedReceiver<MaybeTimeOfFlight<T>>>§

pub fn close(&mut self)

Closes the receiving half of a channel, without dropping it.

This prevents any further messages from being sent on the channel while still enabling the receiver to drain messages that are buffered.

pub fn try_next(&mut self) -> Result<Option<T>, TryRecvError>

Tries to receive the next message without notifying a context if empty.

It is not recommended to call this function from inside of a future, only when you’ve otherwise arranged to be notified when the channel is no longer empty.

This function returns:

Ok(Some(t)) when message is fetched
Ok(None) when channel is closed and no messages left in the queue
Err(e) when there are no messages available, but channel is not yet closed

Trait Implementations§

impl<T> Debug for UnboundedMeteredReceiver<T>where
T: Debug,

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

Formats the value using the given formatter. Read more

impl<T> Deref for UnboundedMeteredReceiver<T>

type Target = UnboundedReceiver<MaybeTimeOfFlight<T>>

The resulting type after dereferencing.

fn deref(&self) -> &<UnboundedMeteredReceiver<T> as Deref>::Target

Dereferences the value.

impl<T> DerefMut for UnboundedMeteredReceiver<T>

fn deref_mut(&mut self) -> &mut <UnboundedMeteredReceiver<T> as Deref>::Target

Mutably dereferences the value.

impl<T> FusedStream for UnboundedMeteredReceiver<T>

fn is_terminated(&self) -> bool

Returns true if the stream should no longer be polled.

impl<T> Stream for UnboundedMeteredReceiver<T>

fn size_hint(&self) -> (usize, Option<usize>)

Don’t rely on the unreliable size hint.

type Item = T

Values yielded by the stream.

fn poll_next(
self: Pin<&mut UnboundedMeteredReceiver<T>>,
cx: &mut Context<'_>
) -> Poll<Option<<UnboundedMeteredReceiver<T> as Stream>::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

Auto Trait Implementations§

impl<T> !UnwindSafe for UnboundedMeteredReceiver<T>

Blanket Implementations§

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for Twhere
T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for Twhere
T: ?Sized,

const: unstable · source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> CheckedConversion for T

fn checked_from<T>(t: T) -> Option<Self>where
Self: TryFrom<T>,

Convert from a value of T into an equivalent instance of Option<Self>. Read more

fn checked_into<T>(self) -> Option<T>where
Self: TryInto<T>,

Consume self to return Some equivalent value of Option<T>. Read more

impl<T> Conv for T

fn conv<T>(self) -> Twhere
Self: Into<T>,

Converts self into T using Into<T>. Read more

impl<T> Downcast for Twhere
T: Any,

fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait. Read more

fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait. Read more

fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s. Read more

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s. Read more

impl<T> DowncastSync for Twhere
T: Any + Send + Sync,

fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Send + Sync + 'static>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait. Read more

impl<E, S, T> FirstAnswer<T, E> for Swhere
S: Stream<Item = Result<T, E>> + Unpin,
E: From<ProtoError>,

fn first_answer(self) -> FirstAnswerFuture<Self> ⓘ

Convert a Stream of dns response into a Future yielding the first answer, discarding others if any. Read more

impl<T> FmtForward for T

fn fmt_binary(self) -> FmtBinary<Self>where
Self: Binary,

Causes self to use its Binary implementation when Debug-formatted. Read more

fn fmt_display(self) -> FmtDisplay<Self>where
Self: Display,

Causes self to use its Display implementation when Debug-formatted. Read more

fn fmt_lower_exp(self) -> FmtLowerExp<Self>where
Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted. Read more

fn fmt_lower_hex(self) -> FmtLowerHex<Self>where
Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted. Read more

fn fmt_octal(self) -> FmtOctal<Self>where
Self: Octal,

Causes self to use its Octal implementation when Debug-formatted. Read more

fn fmt_pointer(self) -> FmtPointer<Self>where
Self: Pointer,

Causes self to use its Pointer implementation when Debug-formatted. Read more

fn fmt_upper_exp(self) -> FmtUpperExp<Self>where
Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted. Read more

fn fmt_upper_hex(self) -> FmtUpperHex<Self>where
Self: UpperHex,

Causes self to use its UpperHex implementation when Debug-formatted. Read more

fn fmt_list(self) -> FmtList<Self>where
&'a Self: for<'a> IntoIterator,

Formats each item in a sequence. Read more

impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl IntoStream for Iwhere
I: Stream,

type Item = ::Item

The type of the elements being iterated over.

type IntoStream = I

Which kind of stream are we turning this into?

fn into_stream(self) -> I

Creates a stream from a value.

impl<T> IsType<T> for T

fn from_ref(t: &T) -> &T

Cast reference.

fn into_ref(&self) -> &T

Cast reference.

fn from_mut(t: &mut T) -> &mut T

Cast mutable reference.

fn into_mut(&mut self) -> &mut T

Cast mutable reference.

impl<T, Outer> IsWrappedBy<Outer> for Twhere
Outer: AsRef<T> + AsMut<T> + From<T>,
T: From<Outer>,

fn from_ref(outer: &Outer) -> &T

Get a reference to the inner from the outer.

fn from_mut(outer: &mut Outer) -> &mut T

Get a mutable reference to the inner from the outer.

impl<T> Pipe for Twhere
T: ?Sized,

fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> Rwhere
Self: Sized,

Pipes by value. This is generally the method you want to use. Read more

fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> Rwhere
R: 'a,

Borrows self and passes that borrow into the pipe function. Read more

fn pipe_ref_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> Rwhere
R: 'a,

Mutably borrows self and passes that borrow into the pipe function. Read more

fn pipe_borrow<'a, B, R>(&'a self, func: impl FnOnce(&'a B) -> R) -> Rwhere
 Self: Borrow,
 B: 'a + ?Sized,
 R: 'a,

Borrows self, then passes self.borrow() into the pipe function. Read more

fn pipe_borrow_mut<'a, B, R>(
 &'a mut self,
 func: impl FnOnce(&'a mut B) -> R
) -> Rwhere
 Self: BorrowMut,
 B: 'a + ?Sized,
 R: 'a,

Mutably borrows self, then passes self.borrow_mut() into the pipe function. Read more

fn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> Rwhere
 Self: AsRef,
 U: 'a + ?Sized,
 R: 'a,

Borrows self, then passes self.as_ref() into the pipe function.

fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> Rwhere
 Self: AsMut,
 U: 'a + ?Sized,
 R: 'a,

Mutably borrows self, then passes self.as_mut() into the pipe function. Read more

fn pipe_deref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> Rwhere
 Self: Deref<Target = T>,
 T: 'a + ?Sized,
 R: 'a,

Borrows self, then passes self.deref() into the pipe function.

fn pipe_deref_mut<'a, T, R>(&'a mut self, func: impl FnOnce(&'a mut T) -> R) -> Rwhere
 Self: DerefMut<Target = T> + Deref,
 T: 'a + ?Sized,
 R: 'a,

Mutably borrows self, then passes self.deref_mut() into the pipe function. Read more

impl<T> Pointable for T

const ALIGN: usize = mem::align_of::<T>()

The alignment of pointer.

type Init = T

The type for initializers.

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

impl<T> Same<T> for T

type Output = T

Should always be Self

impl<T> SaturatedConversion for T

fn saturated_from<T>(t: T) -> Selfwhere
Self: UniqueSaturatedFrom<T>,

Convert from a value of T into an equivalent instance of Self. Read more

fn saturated_into<T>(self) -> Twhere
Self: UniqueSaturatedInto<T>,

Consume self to return an equivalent value of T. Read more

impl<T> StreamExt for Twhere
T: Stream + ?Sized,

fn next(&mut self) -> Next<'_, Self> ⓘwhere
Self: Unpin,

Creates a future that resolves to the next item in the stream. Read more

fn into_future(self) -> StreamFuture<Self> ⓘwhere
Self: Sized + 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

fn map<T, F>(self, f: F) -> Map<Self, F>where
F: FnMut(Self::Item) -> T,
Self: Sized,

Maps this stream’s items to a different type, returning a new stream of the resulting type. Read more

fn enumerate(self) -> Enumerate<Self>where
Self: Sized,

Creates a stream which gives the current iteration count as well as the next value. Read more

fn filter<Fut, F>(self, f: F) -> Filter<Self, Fut, F>where
 F: FnMut(&Self::Item) -> Fut,
 Fut: Future<Output = bool>,
 Self: Sized,

Filters the values produced by this stream according to the provided asynchronous predicate. Read more

fn filter_map<Fut, T, F>(self, f: F) -> FilterMap<Self, Fut, F>where
 F: FnMut(Self::Item) -> Fut,
 Fut: Future<Output = Option<T>>,
 Self: Sized,

Filters the values produced by this stream while simultaneously mapping them to a different type according to the provided asynchronous closure. Read more

fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F>where
 F: FnMut(Self::Item) -> Fut,
 Fut: Future,
 Self: Sized,

Computes from this stream’s items new items of a different type using an asynchronous closure. Read more

fn collect<C>(self) -> Collect<Self, C> ⓘwhere
C: Default + Extend<Self::Item>,
Self: Sized,

Transforms a stream into a collection, returning a future representing the result of that computation. Read more

fn unzip<A, B, FromA, FromB>(self) -> Unzip<Self, FromA, FromB> ⓘwhere
 FromA: Default + Extend<A>,
 FromB: Default + Extend,
 Self: Sized + Stream<Item = (A, B)>,

Converts a stream of pairs into a future, which resolves to pair of containers. Read more

fn concat(self) -> Concat<Self> ⓘwhere
Self: Sized,
Self::Item: Extend<<Self::Item as IntoIterator>::Item> + IntoIterator + Default,

Concatenate all items of a stream into a single extendable destination, returning a future representing the end result. Read more

fn count(self) -> Count<Self>where
Self: Sized,

Drives the stream to completion, counting the number of items. Read more

fn cycle(self) -> Cycle<Self>where
Self: Sized + Clone,

Repeats a stream endlessly. Read more

fn fold<T, Fut, F>(self, init: T, f: F) -> Fold<Self, Fut, T, F> ⓘwhere
 F: FnMut(T, Self::Item) -> Fut,
 Fut: Future<Output = T>,
 Self: Sized,

Execute an accumulating asynchronous computation over a stream, collecting all the values into one final result. Read more

fn any<Fut, F>(self, f: F) -> Any<Self, Fut, F>where
 F: FnMut(Self::Item) -> Fut,
 Fut: Future<Output = bool>,
 Self: Sized,

Execute predicate over asynchronous stream, and return true if any element in stream satisfied a predicate. Read more

fn all<Fut, F>(self, f: F) -> All<Self, Fut, F>where
 F: FnMut(Self::Item) -> Fut,
 Fut: Future<Output = bool>,
 Self: Sized,

Execute predicate over asynchronous stream, and return true if all element in stream satisfied a predicate. Read more

fn flatten(self) -> Flatten<Self>where
Self::Item: Stream,
Self: Sized,

Flattens a stream of streams into just one continuous stream. Read more

fn flatten_unordered(
 self,
 limit: impl Into<Option<usize>>
) -> FlattenUnordered<Self>where
 Self::Item: Stream + Unpin,
 Self: Sized,

Flattens a stream of streams into just one continuous stream. Polls inner streams concurrently. Read more

fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F>where
 F: FnMut(Self::Item) -> U,
 U: Stream,
 Self: Sized,

Maps a stream like StreamExt::map but flattens nested Streams. Read more

fn flat_map_unordered<U, F>(
 self,
 limit: impl Into<Option<usize>>,
 f: F
) -> FlatMapUnordered<Self, U, F>where
 U: Stream + Unpin,
 F: FnMut(Self::Item) -> U,
 Self: Sized,

Maps a stream like StreamExt::map but flattens nested Streams and polls them concurrently, yielding items in any order, as they made available. Read more

fn scan<S, B, Fut, F>(self, initial_state: S, f: F) -> Scan<Self, S, Fut, F>where
 F: FnMut(&mut S, Self::Item) -> Fut,
 Fut: Future<Output = Option>,
 Self: Sized,

Combinator similar to StreamExt::fold that holds internal state and produces a new stream. Read more

fn skip_while<Fut, F>(self, f: F) -> SkipWhile<Self, Fut, F>where
 F: FnMut(&Self::Item) -> Fut,
 Fut: Future<Output = bool>,
 Self: Sized,

Skip elements on this stream while the provided asynchronous predicate resolves to true. Read more

fn take_while<Fut, F>(self, f: F) -> TakeWhile<Self, Fut, F>where
 F: FnMut(&Self::Item) -> Fut,
 Fut: Future<Output = bool>,
 Self: Sized,

Take elements from this stream while the provided asynchronous predicate resolves to true. Read more

fn take_until<Fut>(self, fut: Fut) -> TakeUntil<Self, Fut>where
Fut: Future,
Self: Sized,

Take elements from this stream until the provided future resolves. Read more

fn for_each<Fut, F>(self, f: F) -> ForEach<Self, Fut, F> ⓘwhere
 F: FnMut(Self::Item) -> Fut,
 Fut: Future<Output = ()>,
 Self: Sized,

Runs this stream to completion, executing the provided asynchronous closure for each element on the stream. Read more

fn for_each_concurrent<Fut, F>(
 self,
 limit: impl Into<Option<usize>>,
 f: F
) -> ForEachConcurrent<Self, Fut, F> ⓘwhere
 F: FnMut(Self::Item) -> Fut,
 Fut: Future<Output = ()>,
 Self: Sized,

Runs this stream to completion, executing the provided asynchronous closure for each element on the stream concurrently as elements become available. Read more

fn take(self, n: usize) -> Take<Self>where
Self: Sized,

Creates a new stream of at most n items of the underlying stream. Read more

fn skip(self, n: usize) -> Skip<Self>where
Self: Sized,

Creates a new stream which skips n items of the underlying stream. Read more

fn fuse(self) -> Fuse<Self>where
Self: Sized,

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

fn by_ref(&mut self) -> &mut Self

Borrows a stream, rather than consuming it. Read more

fn catch_unwind(self) -> CatchUnwind<Self>where
Self: Sized + UnwindSafe,

Catches unwinding panics while polling the stream. Read more

fn boxed<'a>(
self
) -> Pin<Box<dyn Stream<Item = Self::Item> + Send + 'a, Global>>where
Self: 'a + Sized + Send,

Wrap the stream in a Box, pinning it. Read more

fn boxed_local<'a>(self) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a, Global>>where
Self: 'a + Sized,

Wrap the stream in a Box, pinning it. Read more

fn buffered(self, n: usize) -> Buffered<Self>where
Self::Item: Future,
Self: Sized,

An adaptor for creating a buffered list of pending futures. Read more

fn buffer_unordered(self, n: usize) -> BufferUnordered<Self>where
Self::Item: Future,
Self: Sized,

An adaptor for creating a buffered list of pending futures (unordered). Read more

fn zip<St>(self, other: St) -> Zip<Self, St>where
St: Stream,
Self: Sized,

An adapter for zipping two streams together. Read more

fn chain<St>(self, other: St) -> Chain<Self, St>where
St: Stream<Item = Self::Item>,
Self: Sized,

Adapter for chaining two streams. Read more

fn peekable(self) -> Peekable<Self>where
Self: Sized,

Creates a new stream which exposes a peek method. Read more

fn chunks(self, capacity: usize) -> Chunks<Self>where
Self: Sized,

An adaptor for chunking up items of the stream inside a vector. Read more

fn ready_chunks(self, capacity: usize) -> ReadyChunks<Self>where
Self: Sized,

An adaptor for chunking up ready items of the stream inside a vector. Read more

fn forward<S>(self, sink: S) -> Forward<Self, S> ⓘwhere
S: Sink<Self::Ok, Error = Self::Error>,
Self: TryStream + Sized,

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

fn split<Item>(self) -> (SplitSink<Self, Item>, SplitStream<Self>)where
Self: Sink<Item> + Sized,

Splits this Stream + Sink object into separate Sink and Stream objects. Read more

fn inspect<F>(self, f: F) -> Inspect<Self, F>where
F: FnMut(&Self::Item),
Self: Sized,

Do something with each item of this stream, afterwards passing it on. Read more

fn left_stream(self) -> Either<Self, B> ⓘwhere
B: Stream<Item = Self::Item>,
Self: Sized,

Wrap this stream in an Either stream, making it the left-hand variant of that Either. Read more

fn right_stream(self) -> Either<B, Self> ⓘwhere
B: Stream<Item = Self::Item>,
Self: Sized,

Wrap this stream in an Either stream, making it the right-hand variant of that Either. Read more

fn poll_next_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Option<Self::Item>>where
Self: Unpin,

A convenience method for calling Stream::poll_next on Unpin stream types. Read more

fn select_next_some(&mut self) -> SelectNextSome<'_, Self> ⓘwhere
Self: Unpin + FusedStream,

Returns a Future that resolves when the next item in this stream is ready. Read more

impl<T> StreamExt for Twhere
T: Stream + ?Sized,

fn next(&mut self) -> NextFuture<'_, Self>where
Self: Unpin,

Advances the stream and returns the next value. Read more

fn take(self, n: usize) -> Take<Self>where
Self: Sized,

Creates a stream that yields its first n elements. Read more

fn take_while(self, predicate: P) -> TakeWhile<Self, P>where
Self: Sized,
P: FnMut(&Self::Item) -> bool,

Creates a stream that yields elements based on a predicate. Read more

fn throttle(self, d: Duration) -> Throttle<Self>where
Self: Sized,

Limit the amount of items yielded per timeslice in a stream. Read more

fn step_by(self, step: usize) -> StepBy<Self>where
Self: Sized,

Creates a stream that yields each stepth element. Read more

fn chain(self, other: U) -> Chain<Self, U>where
Self: Sized,
U: Stream<Item = Self::Item>,

Takes two streams and creates a new stream over both in sequence. Read more

fn cloned<'a, T>(self) -> Cloned<Self>where
Self: Sized + Stream<Item = &'a T>,
T: 'a + Clone,

Creates an stream which copies all of its elements. Read more

fn copied<'a, T>(self) -> Copied<Self>where
Self: Sized + Stream<Item = &'a T>,
T: 'a + Copy,

Creates an stream which copies all of its elements. Read more

fn cycle(self) -> Cycle<Self>where
Self: Clone + Sized,

Creates a stream that yields the provided values infinitely and in order. Read more

fn enumerate(self) -> Enumerate<Self>where
Self: Sized,

Creates a stream that gives the current element’s count as well as the next value. Read more

fn delay(self, dur: Duration) -> Delay<Self>where
Self: Sized,

Creates a stream that is delayed before it starts yielding items. Read more

fn map<B, F>(self, f: F) -> Map<Self, F>where
Self: Sized,
F: FnMut(Self::Item) -> B,

Takes a closure and creates a stream that calls that closure on every element of this stream. Read more

fn inspect<F>(self, f: F) -> Inspect<Self, F>where
Self: Sized,
F: FnMut(&Self::Item),

A combinator that does something with each element in the stream, passing the value on. Read more

fn last(self) -> LastFuture<Self, Self::Item>where
Self: Sized,

Returns the last element of the stream. Read more

fn fuse(self) -> Fuse<Self>where
Self: Sized,

Creates a stream which ends after the first None. Read more

fn filter(self, predicate: P) -> Filter<Self, P>where
Self: Sized,
P: FnMut(&Self::Item) -> bool,

Creates a stream that uses a predicate to determine if an element should be yielded. Read more

fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F>where
 Self: Sized,
 U: IntoStream,
 F: FnMut(Self::Item) -> U,

Creates an stream that works like map, but flattens nested structure. Read more

fn flatten(self) -> Flatten<Self>where
Self: Sized,
Self::Item: IntoStream,

Creates an stream that flattens nested structure. Read more

fn filter_map<B, F>(self, f: F) -> FilterMap<Self, F>where
Self: Sized,
F: FnMut(Self::Item) -> Option,

Both filters and maps a stream. Read more

fn min_by_key<B, F>(self, key_by: F) -> MinByKeyFuture<Self, Self::Item, F>where
 Self: Sized,
 B: Ord,
 F: FnMut(&Self::Item) -> B,

Returns the element that gives the minimum value with respect to the specified key function. If several elements are equally minimum, the first element is returned. If the stream is empty, None is returned. Read more

fn max_by_key<B, F>(self, key_by: F) -> MaxByKeyFuture<Self, Self::Item, F>where
 Self: Sized,
 B: Ord,
 F: FnMut(&Self::Item) -> B,

Returns the element that gives the maximum value with respect to the specified key function. If several elements are equally maximum, the first element is returned. If the stream is empty, None is returned. Read more

fn min_by<F>(self, compare: F) -> MinByFuture<Self, F, Self::Item>where
Self: Sized,
F: FnMut(&Self::Item, &Self::Item) -> Ordering,

Returns the element that gives the minimum value with respect to the specified comparison function. If several elements are equally minimum, the first element is returned. If the stream is empty, None is returned. Read more

fn max(self) -> MaxFuture<Self, Self::Item>where
Self: Sized,
Self::Item: Ord,

Returns the element that gives the maximum value. If several elements are equally maximum, the first element is returned. If the stream is empty, None is returned. Read more

fn min(self) -> MinFuture<Self, Self::Item>where
Self: Sized,
Self::Item: Ord,

Returns the element that gives the minimum value. If several elements are equally minimum, the first element is returned. If the stream is empty, None is returned. Read more

fn max_by<F>(self, compare: F) -> MaxByFuture<Self, F, Self::Item>where
Self: Sized,
F: FnMut(&Self::Item, &Self::Item) -> Ordering,

Returns the element that gives the maximum value with respect to the specified comparison function. If several elements are equally maximum, the first element is returned. If the stream is empty, None is returned. Read more

fn nth(&mut self, n: usize) -> NthFuture<'_, Self>where
Self: Unpin + Sized,

Returns the nth element of the stream. Read more

fn all<F>(&mut self, f: F) -> AllFuture<'_, Self, F, Self::Item>where
Self: Unpin + Sized,
F: FnMut(Self::Item) -> bool,

Tests if every element of the stream matches a predicate. Read more

fn find(&mut self, p: P) -> FindFuture<'_, Self, P>where
Self: Unpin + Sized,
P: FnMut(&Self::Item) -> bool,

Searches for an element in a stream that satisfies a predicate. Read more

fn find_map<F, B>(&mut self, f: F) -> FindMapFuture<'_, Self, F>where
Self: Unpin + Sized,
F: FnMut(Self::Item) -> Option,

Applies function to the elements of stream and returns the first non-none result. Read more

fn fold<B, F>(self, init: B, f: F) -> FoldFuture<Self, F, B>where
Self: Sized,
F: FnMut(B, Self::Item) -> B,

A combinator that applies a function to every element in a stream producing a single, final value. Read more

fn partition<B, F>(self, f: F) -> PartitionFuture<Self, F, B>where
 Self: Sized,
 F: FnMut(&Self::Item) -> bool,
 B: Default + Extend<Self::Item>,

A combinator that applies a function to every element in a stream creating two collections from it. Read more

fn for_each<F>(self, f: F) -> ForEachFuture<Self, F>where
Self: Sized,
F: FnMut(Self::Item),

Call a closure on each element of the stream. Read more

fn any<F>(&mut self, f: F) -> AnyFuture<'_, Self, F, Self::Item>where
Self: Unpin + Sized,
F: FnMut(Self::Item) -> bool,

Tests if any element of the stream matches a predicate. Read more

fn by_ref(&mut self) -> &mut Self

Borrows an stream, rather than consuming it. Read more

fn scan<St, B, F>(self, initial_state: St, f: F) -> Scan<Self, St, F>where
Self: Sized,
F: FnMut(&mut St, Self::Item) -> Option,

A stream adaptor similar to fold that holds internal state and produces a new stream. Read more

fn skip_while(self, predicate: P) -> SkipWhile<Self, P>where
Self: Sized,
P: FnMut(&Self::Item) -> bool,

Combinator that skips elements based on a predicate. Read more

fn skip(self, n: usize) -> Skip<Self>where
Self: Sized,

Creates a combinator that skips the first n elements. Read more

fn timeout(self, dur: Duration) -> Timeout<Self>where
Self: Stream + Sized,

Await a stream or times out after a duration of time. Read more

fn try_fold<B, F, T, E>(&mut self, init: T, f: F) -> TryFoldFuture<'_, Self, F, T>where
Self: Unpin + Sized,
F: FnMut(B, Self::Item) -> Result<T, E>,

A combinator that applies a function as long as it returns successfully, producing a single, final value. Immediately returns the error when the function returns unsuccessfully. Read more

fn try_for_each<F, E>(&mut self, f: F) -> TryForEachFuture<'_, Self, F>where
Self: Unpin + Sized,
F: FnMut(Self::Item) -> Result<(), E>,

Applies a falliable function to each element in a stream, stopping at first error and returning it. Read more

fn zip(self, other: U) -> Zip<Self, U>where
Self: Sized,
U: Stream,

‘Zips up’ two streams into a single stream of pairs. Read more

fn unzip<A, B, FromA, FromB>(self) -> UnzipFuture<Self, FromA, FromB>where
 FromA: Default + Extend<A>,
 FromB: Default + Extend,
 Self: Stream<Item = (A, B)> + Sized,

Converts an stream of pairs into a pair of containers. Read more

fn collect<'a, B>(self) -> Pin<Box<dyn Future<Output = B> + Send + 'a, Global>>where
 Self: 'a + Sized + Send,
 B: FromStream<Self::Item>,
 Self::Item: Send,

Transforms a stream into a collection. Read more

fn merge(self, other: U) -> Merge<Self, U>where
Self: Sized,
U: Stream<Item = Self::Item>,

Combines multiple streams into a single stream of all their outputs. Read more

fn partial_cmp<S>(self, other: S) -> PartialCmpFuture<Self, S>where
 Self: Sized + Stream,
 S: Stream,
 Self::Item: PartialOrd<<S as Stream>::Item>,

Lexicographically compares the elements of this Stream with those of another. Read more

fn position(&mut self, predicate: P) -> PositionFuture<'_, Self, P>where
Self: Unpin + Sized,
P: FnMut(Self::Item) -> bool,

Searches for an element in a Stream that satisfies a predicate, returning its index. Read more

fn cmp<S>(self, other: S) -> CmpFuture<Self, S>where
 Self: Sized + Stream,
 S: Stream,
 Self::Item: Ord,

Lexicographically compares the elements of this Stream with those of another using ‘Ord’. Read more

fn count(self) -> CountFuture<Self>where
Self: Sized,

Counts the number of elements in the stream. Read more

fn ne<S>(self, other: S) -> NeFuture<Self, S>where
 Self: Sized,
 S: Stream,
 Self::Item: PartialEq<<S as Stream>::Item>,

Determines if the elements of this Stream are lexicographically not equal to those of another. Read more

fn ge<S>(self, other: S) -> GeFuture<Self, S>where
 Self: Sized + Stream,
 S: Stream,
 Self::Item: PartialOrd<<S as Stream>::Item>,

Determines if the elements of this Stream are lexicographically greater than or equal to those of another. Read more

fn eq<S>(self, other: S) -> EqFuture<Self, S>where
 Self: Sized + Stream,
 S: Stream,
 Self::Item: PartialEq<<S as Stream>::Item>,

Determines if the elements of this Stream are lexicographically equal to those of another. Read more

fn gt<S>(self, other: S) -> GtFuture<Self, S>where
 Self: Sized + Stream,
 S: Stream,
 Self::Item: PartialOrd<<S as Stream>::Item>,

Determines if the elements of this Stream are lexicographically greater than those of another. Read more

fn le<S>(self, other: S) -> LeFuture<Self, S>where
 Self: Sized + Stream,
 S: Stream,
 Self::Item: PartialOrd<<S as Stream>::Item>,

Determines if the elements of this Stream are lexicographically less or equal to those of another. Read more

fn lt<S>(self, other: S) -> LtFuture<Self, S>where
 Self: Sized + Stream,
 S: Stream,
 Self::Item: PartialOrd<<S as Stream>::Item>,

Determines if the elements of this Stream are lexicographically less than those of another. Read more

fn sum<'a, S>(self) -> Pin<Box<dyn Future<Output = S> + 'a, Global>>where
Self: 'a + Sized + Stream<Item = S>,
S: Sum<Self::Item>,

Sums the elements of a stream. Read more

fn product<'a, P>(self) -> Pin<Box<dyn Future<Output = P> + 'a, Global>>where
Self: 'a + Sized + Stream<Item = P>,
P: Product,

Multiplies all elements of the stream. Read more

impl<S> StreamExt for Swhere
S: Stream + ?Sized,

fn poll_next(&mut self, cx: &mut Context<'_>) -> Poll<Option<Self::Item>>where
Self: Unpin,

A convenience for calling Stream::poll_next() on !Unpin types.

fn next(&mut self) -> NextFuture<'_, Self> ⓘwhere
Self: Unpin,

Retrieves the next item in the stream. Read more

fn try_next<T, E>(&mut self) -> TryNextFuture<'_, Self> ⓘwhere
Self: Stream<Item = Result<T, E>> + Unpin,

Retrieves the next item in the stream. Read more

fn count(self) -> CountFuture<Self> ⓘwhere
Self: Sized,

Counts the number of items in the stream. Read more

fn map<T, F>(self, f: F) -> Map<Self, F>where
Self: Sized,
F: FnMut(Self::Item) -> T,

Maps items of the stream to new values using a closure. Read more

fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F>where
 Self: Sized,
 U: Stream,
 F: FnMut(Self::Item) -> U,

Maps items to streams and then concatenates them. Read more

fn flatten(self) -> Flatten<Self>where
Self: Sized,
Self::Item: Stream,

Concatenates inner streams. Read more

fn then<F, Fut>(self, f: F) -> Then<Self, F, Fut>where
 Self: Sized,
 F: FnMut(Self::Item) -> Fut,
 Fut: Future,

Maps items of the stream to new values using an async closure. Read more

fn filter(self, predicate: P) -> Filter<Self, P>where
Self: Sized,
P: FnMut(&Self::Item) -> bool,

Keeps items of the stream for which predicate returns true. Read more

fn filter_map<T, F>(self, f: F) -> FilterMap<Self, F>where
Self: Sized,
F: FnMut(Self::Item) -> Option<T>,

Filters and maps items of the stream using a closure. Read more

fn take(self, n: usize) -> Take<Self>where
Self: Sized,

Takes only the first n items of the stream. Read more

fn take_while(self, predicate: P) -> TakeWhile<Self, P>where
Self: Sized,
P: FnMut(&Self::Item) -> bool,

Takes items while predicate returns true. Read more

fn skip(self, n: usize) -> Skip<Self>where
Self: Sized,

Skips the first n items of the stream. Read more

fn skip_while(self, predicate: P) -> SkipWhile<Self, P>where
Self: Sized,
P: FnMut(&Self::Item) -> bool,

Skips items while predicate returns true. Read more

fn step_by(self, step: usize) -> StepBy<Self>where
Self: Sized,

Yields every stepth item. Read more

fn chain(self, other: U) -> Chain<Self, U>where
Self: Sized,
U: Stream<Item = Self::Item>,

Appends another stream to the end of this one. Read more

fn cloned<'a, T>(self) -> Cloned<Self>where
Self: Stream<Item = &'a T> + Sized,
T: 'a + Clone,

Clones all items. Read more

fn copied<'a, T>(self) -> Copied<Self>where
Self: Stream<Item = &'a T> + Sized,
T: 'a + Copy,

Copies all items. Read more

fn collect<C>(self) -> CollectFuture<Self, C> ⓘwhere
Self: Sized,
C: Default + Extend<Self::Item>,

Collects all items in the stream into a collection. Read more

fn try_collect<T, E, C>(self) -> TryCollectFuture<Self, C> ⓘwhere
Self: Stream<Item = Result<T, E>> + Sized,
C: Default + Extend<T>,

Collects all items in the fallible stream into a collection. Read more

fn partition<B, P>(self, predicate: P) -> PartitionFuture<Self, P, B> ⓘwhere
 Self: Sized,
 B: Default + Extend<Self::Item>,
 P: FnMut(&Self::Item) -> bool,

Partitions items into those for which predicate is true and those for which it is false, and then collects them into two collections. Read more

fn fold<T, F>(self, init: T, f: F) -> FoldFuture<Self, F, T> ⓘwhere
Self: Sized,
F: FnMut(T, Self::Item) -> T,

Accumulates a computation over the stream. Read more

fn try_fold<T, E, F, B>(&mut self, init: B, f: F) -> TryFoldFuture<'_, Self, F, B> ⓘwhere
Self: Stream<Item = Result<T, E>> + Unpin + Sized,
F: FnMut(B, T) -> Result<B, E>,

Accumulates a fallible computation over the stream. Read more

fn scan<St, B, F>(self, initial_state: St, f: F) -> Scan<Self, St, F>where
Self: Sized,
F: FnMut(&mut St, Self::Item) -> Option,

Maps items of the stream to new values using a state value and a closure. Read more

fn fuse(self) -> Fuse<Self>where
Self: Sized,

Fuses the stream so that it stops yielding items after the first None. Read more

fn cycle(self) -> Cycle<Self>where
Self: Clone + Sized,

Repeats the stream from beginning to end, forever. Read more

fn enumerate(self) -> Enumerate<Self>where
Self: Sized,

Enumerates items, mapping them to (index, item). Read more

fn inspect<F>(self, f: F) -> Inspect<Self, F>where
Self: Sized,
F: FnMut(&Self::Item),

Calls a closure on each item and passes it on. Read more

fn nth(&mut self, n: usize) -> NthFuture<'_, Self> ⓘwhere
Self: Unpin,

Gets the nth item of the stream. Read more

fn last(self) -> LastFuture<Self> ⓘwhere
Self: Sized,

Returns the last item in the stream. Read more

fn find(&mut self, predicate: P) -> FindFuture<'_, Self, P> ⓘwhere
Self: Unpin,
P: FnMut(&Self::Item) -> bool,

Finds the first item of the stream for which predicate returns true. Read more

fn find_map<F, B>(&mut self, f: F) -> FindMapFuture<'_, Self, F> ⓘwhere
Self: Unpin,
F: FnMut(Self::Item) -> Option,

Applies a closure to items in the stream and returns the first Some result. Read more

fn position(&mut self, predicate: P) -> PositionFuture<'_, Self, P> ⓘwhere
Self: Unpin,
P: FnMut(Self::Item) -> bool,

Finds the index of the first item of the stream for which predicate returns true. Read more

fn all(&mut self, predicate: P) -> AllFuture<'_, Self, P> ⓘwhere
Self: Unpin,
P: FnMut(Self::Item) -> bool,

Tests if predicate returns true for all items in the stream. Read more

fn any(&mut self, predicate: P) -> AnyFuture<'_, Self, P> ⓘwhere
Self: Unpin,
P: FnMut(Self::Item) -> bool,

Tests if predicate returns true for any item in the stream. Read more

fn for_each<F>(self, f: F) -> ForEachFuture<Self, F> ⓘwhere
Self: Sized,
F: FnMut(Self::Item),

Calls a closure on each item of the stream. Read more

fn try_for_each<F, E>(&mut self, f: F) -> TryForEachFuture<'_, Self, F> ⓘwhere
Self: Unpin,
F: FnMut(Self::Item) -> Result<(), E>,

Calls a fallible closure on each item of the stream, stopping on first error. Read more

fn zip(self, other: U) -> Zip<Self, U>where
Self: Sized,
U: Stream,

Zips up two streams into a single stream of pairs. Read more

fn unzip<A, B, FromA, FromB>(self) -> UnzipFuture<Self, FromA, FromB> ⓘwhere
 FromA: Default + Extend<A>,
 FromB: Default + Extend,
 Self: Stream<Item = (A, B)> + Sized,

Collects a stream of pairs into a pair of collections. Read more

fn or<S>(self, other: S) -> Or<Self, S>where
Self: Sized,
S: Stream<Item = Self::Item>,

Merges with other stream, preferring items from self whenever both streams are ready. Read more

fn race<S>(self, other: S) -> Race<Self, S>where
Self: Sized,
S: Stream<Item = Self::Item>,

Merges with other stream, with no preference for either stream when both are ready. Read more

fn boxed<'a>(
self
) -> Pin<Box<dyn Stream<Item = Self::Item> + Send + 'a, Global>>where
Self: 'a + Send + Sized,

Boxes the stream and changes its type to dyn Stream + Send + 'a. Read more

fn boxed_local<'a>(self) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a, Global>>where
Self: 'a + Sized,

Boxes the stream and changes its type to dyn Stream + 'a. Read more

impl<St> StreamExt for Stwhere
St: Stream + ?Sized,

fn next(&mut self) -> Next<'_, Self>where
Self: Unpin,

Consumes and returns the next value in the stream or None if the stream is finished. Read more

fn try_next<T, E>(&mut self) -> TryNext<'_, Self>where
Self: Stream<Item = Result<T, E>> + Unpin,

Consumes and returns the next item in the stream. If an error is encountered before the next item, the error is returned instead. Read more

fn map<T, F>(self, f: F) -> Map<Self, F>where
F: FnMut(Self::Item) -> T,
Self: Sized,

Maps this stream’s items to a different type, returning a new stream of the resulting type. Read more

fn map_while<T, F>(self, f: F) -> MapWhile<Self, F>where
F: FnMut(Self::Item) -> Option<T>,
Self: Sized,

Map this stream’s items to a different type for as long as determined by the provided closure. A stream of the target type will be returned, which will yield elements until the closure returns None. Read more

fn then<F, Fut>(self, f: F) -> Then<Self, Fut, F>where
 F: FnMut(Self::Item) -> Fut,
 Fut: Future,
 Self: Sized,

Maps this stream’s items asynchronously to a different type, returning a new stream of the resulting type. Read more

fn merge(self, other: U) -> Merge<Self, U>where
U: Stream<Item = Self::Item>,
Self: Sized,

Combine two streams into one by interleaving the output of both as it is produced. Read more

fn filter<F>(self, f: F) -> Filter<Self, F>where
F: FnMut(&Self::Item) -> bool,
Self: Sized,

Filters the values produced by this stream according to the provided predicate. Read more

fn filter_map<T, F>(self, f: F) -> FilterMap<Self, F>where
F: FnMut(Self::Item) -> Option<T>,
Self: Sized,

Filters the values produced by this stream while simultaneously mapping them to a different type according to the provided closure. Read more

fn fuse(self) -> Fuse<Self>where
Self: Sized,

Creates a stream which ends after the first None. Read more

fn take(self, n: usize) -> Take<Self>where
Self: Sized,

Creates a new stream of at most n items of the underlying stream. Read more

fn take_while<F>(self, f: F) -> TakeWhile<Self, F>where
F: FnMut(&Self::Item) -> bool,
Self: Sized,

Take elements from this stream while the provided predicate resolves to true. Read more

fn skip(self, n: usize) -> Skip<Self>where
Self: Sized,

Creates a new stream that will skip the n first items of the underlying stream. Read more

fn skip_while<F>(self, f: F) -> SkipWhile<Self, F>where
F: FnMut(&Self::Item) -> bool,
Self: Sized,

Skip elements from the underlying stream while the provided predicate resolves to true. Read more

fn all<F>(&mut self, f: F) -> AllFuture<'_, Self, F>where
Self: Unpin,
F: FnMut(Self::Item) -> bool,

Tests if every element of the stream matches a predicate. Read more

fn any<F>(&mut self, f: F) -> AnyFuture<'_, Self, F>where
Self: Unpin,
F: FnMut(Self::Item) -> bool,

Tests if any element of the stream matches a predicate. Read more

fn chain(self, other: U) -> Chain<Self, U>where
U: Stream<Item = Self::Item>,
Self: Sized,

Combine two streams into one by first returning all values from the first stream then all values from the second stream. Read more

fn fold<B, F>(self, init: B, f: F) -> FoldFuture<Self, B, F>where
Self: Sized,
F: FnMut(B, Self::Item) -> B,

A combinator that applies a function to every element in a stream producing a single, final value. Read more

fn collect<T>(self) -> Collect<Self, T>where
T: FromStream<Self::Item>,
Self: Sized,

Drain stream pushing all emitted values into a collection. Read more

fn timeout(self, duration: Duration) -> Timeout<Self>where
Self: Sized,

Applies a per-item timeout to the passed stream. Read more

fn throttle(self, duration: Duration) -> Throttle<Self>where
Self: Sized,

Slows down a stream by enforcing a delay between items. Read more

fn chunks_timeout(
 self,
 max_size: usize,
 duration: Duration
) -> ChunksTimeout<Self>where
 Self: Sized,

Batches the items in the given stream using a maximum duration and size for each batch. Read more

impl<T> Tap for T

fn tap(self, func: impl FnOnce(&Self)) -> Self

Immutable access to a value. Read more

fn tap_mut(self, func: impl FnOnce(&mut Self)) -> Self

Mutable access to a value. Read more

fn tap_borrow(self, func: impl FnOnce(&B)) -> Selfwhere
Self: Borrow,
B: ?Sized,

Immutable access to the Borrow of a value. Read more

fn tap_borrow_mut(self, func: impl FnOnce(&mut B)) -> Selfwhere
Self: BorrowMut,
B: ?Sized,

Mutable access to the BorrowMut of a value. Read more

fn tap_ref<R>(self, func: impl FnOnce(&R)) -> Selfwhere
Self: AsRef<R>,
R: ?Sized,

Immutable access to the AsRef<R> view of a value. Read more

fn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Selfwhere
Self: AsMut<R>,
R: ?Sized,

Mutable access to the AsMut<R> view of a value. Read more

fn tap_deref<T>(self, func: impl FnOnce(&T)) -> Selfwhere
Self: Deref<Target = T>,
T: ?Sized,

Immutable access to the Deref::Target of a value. Read more

fn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Selfwhere
Self: DerefMut<Target = T> + Deref,
T: ?Sized,

Mutable access to the Deref::Target of a value. Read more

fn tap_dbg(self, func: impl FnOnce(&Self)) -> Self

Calls .tap() only in debug builds, and is erased in release builds.

fn tap_mut_dbg(self, func: impl FnOnce(&mut Self)) -> Self

Calls .tap_mut() only in debug builds, and is erased in release builds. Read more

fn tap_borrow_dbg(self, func: impl FnOnce(&B)) -> Selfwhere
Self: Borrow,
B: ?Sized,

Calls .tap_borrow() only in debug builds, and is erased in release builds. Read more

fn tap_borrow_mut_dbg(self, func: impl FnOnce(&mut B)) -> Selfwhere
Self: BorrowMut,
B: ?Sized,

Calls .tap_borrow_mut() only in debug builds, and is erased in release builds. Read more

fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Selfwhere
Self: AsRef<R>,
R: ?Sized,

Calls .tap_ref() only in debug builds, and is erased in release builds. Read more

fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Selfwhere
Self: AsMut<R>,
R: ?Sized,

Calls .tap_ref_mut() only in debug builds, and is erased in release builds. Read more

fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Selfwhere
Self: Deref<Target = T>,
T: ?Sized,

Calls .tap_deref() only in debug builds, and is erased in release builds. Read more

fn tap_deref_mut_dbg<T>(self, func: impl FnOnce(&mut T)) -> Selfwhere
Self: DerefMut<Target = T> + Deref,
T: ?Sized,

Calls .tap_deref_mut() only in debug builds, and is erased in release builds. Read more

impl<T> TryConv for T

fn try_conv<T>(self) -> Result<T, Self::Error>where
Self: TryInto<T>,

Attempts to convert self into T using TryInto<T>. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source§

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

impl<T, U> TryInto for Twhere
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source§

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

impl<S, T, E> TryStream for Swhere
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

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

impl<S> TryStreamExt for Swhere
S: TryStream + ?Sized,

fn err_into<E>(self) -> ErrInto<Self, E>where
Self: Sized,
Self::Error: Into<E>,

Wraps the current stream in a new stream which converts the error type into the one provided. Read more

fn map_ok<T, F>(self, f: F) -> MapOk<Self, F>where
Self: Sized,
F: FnMut(Self::Ok) -> T,

Wraps the current stream in a new stream which maps the success value using the provided closure. Read more

fn map_err<E, F>(self, f: F) -> MapErr<Self, F>where
Self: Sized,
F: FnMut(Self::Error) -> E,

Wraps the current stream in a new stream which maps the error value using the provided closure. Read more

fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F>where
 F: FnMut(Self::Ok) -> Fut,
 Fut: TryFuture<Error = Self::Error>,
 Self: Sized,

Chain on a computation for when a value is ready, passing the successful results to the provided closure f. Read more

fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F>where
 F: FnMut(Self::Error) -> Fut,
 Fut: TryFuture<Ok = Self::Ok>,
 Self: Sized,

Chain on a computation for when an error happens, passing the erroneous result to the provided closure f. Read more

fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F>where
F: FnMut(&Self::Ok),
Self: Sized,

Do something with the success value of this stream, afterwards passing it on. Read more

fn inspect_err<F>(self, f: F) -> InspectErr<Self, F>where
F: FnMut(&Self::Error),
Self: Sized,

Do something with the error value of this stream, afterwards passing it on. Read more

fn into_stream(self) -> IntoStream<Self>where
Self: Sized,

Wraps a TryStream into a type that implements Stream Read more

fn try_next(&mut self) -> TryNext<'_, Self> ⓘwhere
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

fn try_for_each<Fut, F>(self, f: F) -> TryForEach<Self, Fut, F> ⓘwhere
 F: FnMut(Self::Ok) -> Fut,
 Fut: TryFuture<Ok = (), Error = Self::Error>,
 Self: Sized,

Attempts to run this stream to completion, executing the provided asynchronous closure for each element on the stream. Read more

fn try_skip_while<Fut, F>(self, f: F) -> TrySkipWhile<Self, Fut, F>where
 F: FnMut(&Self::Ok) -> Fut,
 Fut: TryFuture<Ok = bool, Error = Self::Error>,
 Self: Sized,

Skip elements on this stream while the provided asynchronous predicate resolves to true. Read more

fn try_take_while<Fut, F>(self, f: F) -> TryTakeWhile<Self, Fut, F>where
 F: FnMut(&Self::Ok) -> Fut,
 Fut: TryFuture<Ok = bool, Error = Self::Error>,
 Self: Sized,

Take elements on this stream while the provided asynchronous predicate resolves to true. Read more

fn try_for_each_concurrent<Fut, F>(
 self,
 limit: impl Into<Option<usize>>,
 f: F
) -> TryForEachConcurrent<Self, Fut, F> ⓘwhere
 F: FnMut(Self::Ok) -> Fut,
 Fut: Future<Output = Result<(), Self::Error>>,
 Self: Sized,

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

fn try_collect<C>(self) -> TryCollect<Self, C> ⓘwhere
C: Default + Extend<Self::Ok>,
Self: Sized,

Attempt to transform a stream into a collection, returning a future representing the result of that computation. Read more

fn try_chunks(self, capacity: usize) -> TryChunks<Self>where
Self: Sized,

An adaptor for chunking up successful items of the stream inside a vector. Read more

fn try_filter<Fut, F>(self, f: F) -> TryFilter<Self, Fut, F>where
 Fut: Future<Output = bool>,
 F: FnMut(&Self::Ok) -> Fut,
 Self: Sized,

Attempt to filter the values produced by this stream according to the provided asynchronous closure. Read more

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,
 Self: Sized,

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

fn try_flatten(self) -> TryFlatten<Self>where
 Self::Ok: TryStream,
 <Self::Ok as TryStream>::Error: From<Self::Error>,
 Self: Sized,

Flattens a stream of streams into just one continuous stream. Read more

fn try_fold<T, Fut, F>(self, init: T, f: F) -> TryFold<Self, Fut, T, F> ⓘwhere
 F: FnMut(T, Self::Ok) -> Fut,
 Fut: TryFuture<Ok = T, Error = Self::Error>,
 Self: Sized,

Attempt to execute an accumulating asynchronous computation over a stream, collecting all the values into one final result. Read more

fn try_concat(self) -> TryConcat<Self> ⓘwhere
Self: Sized,
Self::Ok: Extend<<Self::Ok as IntoIterator>::Item> + IntoIterator + Default,

Attempt to concatenate all items of a stream into a single extendable destination, returning a future representing the end result. Read more

fn try_buffer_unordered(self, n: usize) -> TryBufferUnordered<Self>where
Self::Ok: TryFuture<Error = Self::Error>,
Self: Sized,

Attempt to execute several futures from a stream concurrently (unordered). Read more

fn try_buffered(self, n: usize) -> TryBuffered<Self>where
Self::Ok: TryFuture<Error = Self::Error>,
Self: Sized,

Attempt to execute several futures from a stream concurrently. Read more

fn try_poll_next_unpin(
 &mut self,
 cx: &mut Context<'_>
) -> Poll<Option<Result<Self::Ok, Self::Error>>>where
 Self: Unpin,

A convenience method for calling TryStream::try_poll_next on Unpin stream types. Read more

fn into_async_read(self) -> IntoAsyncRead<Self>where
Self: Sized + TryStreamExt<Error = Error>,
Self::Ok: AsRef<[u8]>,

Adapter that converts this stream into an AsyncBufRead. Read more

impl<S> TryStreamExt for Swhere
S: TryStream,

fn timeout(self, dur: Duration) -> TimeoutStream<Self>where
Self::Error: From<Error>,

Creates a new stream which will take at most dur time to yield each item of the stream. Read more

impl<S, T> UncheckedInto<T> for Swhere
T: UncheckedFrom<S>,

fn unchecked_into(self) -> T

The counterpart to unchecked_from.

impl<T, S> UniqueSaturatedInto<T> for Swhere
T: Bounded,
S: TryInto<T>,

fn unique_saturated_into(self) -> T

Consume self to return an equivalent value of T.

impl<V, T> VZip<V> for Twhere
V: MultiLane<T>,

fn vzip(self) -> V

impl<T> WithSubscriber for T

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘwhere
S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more

impl<T> WithSubscriber for T

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘwhere
S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more

impl<T> Erased for T

impl<T> MaybeDebug for Twhere
T: Debug,

impl<T> MaybeDebug for Twhere
T: Debug,