Struct async_std::stream::Successors
source · pub struct Successors<F, T>{ /* private fields */ }
Available on
unstable
only.Expand description
A stream that yields elements by calling an async closure with the previous value as an argument
This stream is constructed by successors
function
Trait Implementations§
source§impl<F, T: Debug> Debug for Successors<F, T>
impl<F, T: Debug> Debug for Successors<F, T>
source§impl<F, T> Stream for Successors<F, T>
impl<F, T> Stream for Successors<F, T>
impl<'__pin, F, T> Unpin for Successors<F, T>
Auto Trait Implementations§
impl<F, T> Freeze for Successors<F, T>
impl<F, T> RefUnwindSafe for Successors<F, T>where
F: RefUnwindSafe,
T: RefUnwindSafe,
impl<F, T> Send for Successors<F, T>
impl<F, T> Sync for Successors<F, T>
impl<F, T> UnwindSafe for Successors<F, T>where
F: UnwindSafe,
T: UnwindSafe,
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
source§fn in_current_span(self) -> Instrumented<Self> ⓘ
fn in_current_span(self) -> Instrumented<Self> ⓘ
source§impl<I> IntoStream for Iwhere
I: Stream,
impl<I> IntoStream for Iwhere
I: Stream,
source§impl<S> StreamExt for S
impl<S> StreamExt for S
source§fn next(&mut self) -> NextFuture<'_, Self> ⓘwhere
Self: Unpin,
fn next(&mut self) -> NextFuture<'_, Self> ⓘwhere
Self: Unpin,
Retrieves the next item in the stream. Read more
source§fn try_next<T, E>(&mut self) -> TryNextFuture<'_, Self> ⓘ
fn try_next<T, E>(&mut self) -> TryNextFuture<'_, Self> ⓘ
Retrieves the next item in the stream. Read more
source§fn count(self) -> CountFuture<Self> ⓘwhere
Self: Sized,
fn count(self) -> CountFuture<Self> ⓘwhere
Self: Sized,
Counts the number of items in the stream. Read more
source§fn map<T, F>(self, f: F) -> Map<Self, F>
fn map<T, F>(self, f: F) -> Map<Self, F>
Maps items of the stream to new values using a closure. Read more
source§fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F>
fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F>
Maps items to streams and then concatenates them. Read more
source§fn then<F, Fut>(self, f: F) -> Then<Self, F, Fut>
fn then<F, Fut>(self, f: F) -> Then<Self, F, Fut>
Maps items of the stream to new values using an async closure. Read more
source§fn filter_map<T, F>(self, f: F) -> FilterMap<Self, F>
fn filter_map<T, F>(self, f: F) -> FilterMap<Self, F>
Filters and maps items of the stream using a closure. Read more
source§fn take(self, n: usize) -> Take<Self>where
Self: Sized,
fn take(self, n: usize) -> Take<Self>where
Self: Sized,
Takes only the first
n
items of the stream. Read moresource§fn take_while<P>(self, predicate: P) -> TakeWhile<Self, P>
fn take_while<P>(self, predicate: P) -> TakeWhile<Self, P>
source§fn skip(self, n: usize) -> Skip<Self>where
Self: Sized,
fn skip(self, n: usize) -> Skip<Self>where
Self: Sized,
Skips the first
n
items of the stream. Read moresource§fn skip_while<P>(self, predicate: P) -> SkipWhile<Self, P>
fn skip_while<P>(self, predicate: P) -> SkipWhile<Self, P>
source§fn step_by(self, step: usize) -> StepBy<Self>where
Self: Sized,
fn step_by(self, step: usize) -> StepBy<Self>where
Self: Sized,
Yields every
step
th item. Read moresource§fn chain<U>(self, other: U) -> Chain<Self, U>
fn chain<U>(self, other: U) -> Chain<Self, U>
Appends another stream to the end of this one. Read more
source§fn collect<C>(self) -> CollectFuture<Self, C> ⓘ
fn collect<C>(self) -> CollectFuture<Self, C> ⓘ
Collects all items in the stream into a collection. Read more
source§fn try_collect<T, E, C>(self) -> TryCollectFuture<Self, C> ⓘ
fn try_collect<T, E, C>(self) -> TryCollectFuture<Self, C> ⓘ
Collects all items in the fallible stream into a collection. Read more
source§fn partition<B, P>(self, predicate: P) -> PartitionFuture<Self, P, B> ⓘ
fn partition<B, P>(self, predicate: P) -> PartitionFuture<Self, P, B> ⓘ
Partitions items into those for which
predicate
is true
and those for which it is
false
, and then collects them into two collections. Read moresource§fn fold<T, F>(self, init: T, f: F) -> FoldFuture<Self, F, T> ⓘ
fn fold<T, F>(self, init: T, f: F) -> FoldFuture<Self, F, T> ⓘ
Accumulates a computation over the stream. Read more
source§fn try_fold<T, E, F, B>(
&mut self,
init: B,
f: F,
) -> TryFoldFuture<'_, Self, F, B> ⓘ
fn try_fold<T, E, F, B>( &mut self, init: B, f: F, ) -> TryFoldFuture<'_, Self, F, B> ⓘ
Accumulates a fallible computation over the stream. Read more
source§fn scan<St, B, F>(self, initial_state: St, f: F) -> Scan<Self, St, F>
fn scan<St, B, F>(self, initial_state: St, f: F) -> Scan<Self, St, F>
Maps items of the stream to new values using a state value and a closure. Read more
source§fn enumerate(self) -> Enumerate<Self>where
Self: Sized,
fn enumerate(self) -> Enumerate<Self>where
Self: Sized,
Enumerates items, mapping them to
(index, item)
. Read moresource§fn inspect<F>(self, f: F) -> Inspect<Self, F>
fn inspect<F>(self, f: F) -> Inspect<Self, F>
Calls a closure on each item and passes it on. Read more
source§fn nth(&mut self, n: usize) -> NthFuture<'_, Self> ⓘwhere
Self: Unpin,
fn nth(&mut self, n: usize) -> NthFuture<'_, Self> ⓘwhere
Self: Unpin,
Gets the
n
th item of the stream. Read moresource§fn last(self) -> LastFuture<Self> ⓘwhere
Self: Sized,
fn last(self) -> LastFuture<Self> ⓘwhere
Self: Sized,
Returns the last item in the stream. Read more
source§fn find<P>(&mut self, predicate: P) -> FindFuture<'_, Self, P> ⓘ
fn find<P>(&mut self, predicate: P) -> FindFuture<'_, Self, P> ⓘ
source§fn find_map<F, B>(&mut self, f: F) -> FindMapFuture<'_, Self, F> ⓘ
fn find_map<F, B>(&mut self, f: F) -> FindMapFuture<'_, Self, F> ⓘ
source§fn position<P>(&mut self, predicate: P) -> PositionFuture<'_, Self, P> ⓘ
fn position<P>(&mut self, predicate: P) -> PositionFuture<'_, Self, P> ⓘ
source§fn for_each<F>(self, f: F) -> ForEachFuture<Self, F> ⓘ
fn for_each<F>(self, f: F) -> ForEachFuture<Self, F> ⓘ
Calls a closure on each item of the stream. Read more
source§fn try_for_each<F, E>(&mut self, f: F) -> TryForEachFuture<'_, Self, F> ⓘ
fn try_for_each<F, E>(&mut self, f: F) -> TryForEachFuture<'_, Self, F> ⓘ
Calls a fallible closure on each item of the stream, stopping on first error. Read more
source§fn zip<U>(self, other: U) -> Zip<Self, U>
fn zip<U>(self, other: U) -> Zip<Self, U>
Zips up two streams into a single stream of pairs. Read more
source§fn unzip<A, B, FromA, FromB>(self) -> UnzipFuture<Self, FromA, FromB> ⓘ
fn unzip<A, B, FromA, FromB>(self) -> UnzipFuture<Self, FromA, FromB> ⓘ
Collects a stream of pairs into a pair of collections. Read more
source§fn race<S>(self, other: S) -> Race<Self, S>
fn race<S>(self, other: S) -> Race<Self, S>
Merges with
other
stream, with no preference for either stream when both are ready. Read moresource§fn drain(&mut self) -> Drain<'_, Self>
fn drain(&mut self) -> Drain<'_, Self>
Yields all immediately available values from a stream. Read more
source§impl<T> StreamExt for T
impl<T> StreamExt for T
source§fn next(&mut self) -> NextFuture<'_, Self>where
Self: Unpin,
fn next(&mut self) -> NextFuture<'_, Self>where
Self: Unpin,
Advances the stream and returns the next value. Read more
source§fn take(self, n: usize) -> Take<Self>where
Self: Sized,
fn take(self, n: usize) -> Take<Self>where
Self: Sized,
Creates a stream that yields its first
n
elements. Read moresource§fn take_while<P>(self, predicate: P) -> TakeWhile<Self, P>
fn take_while<P>(self, predicate: P) -> TakeWhile<Self, P>
Creates a stream that yields elements based on a predicate. Read more
source§fn throttle(self, d: Duration) -> Throttle<Self>where
Self: Sized,
fn throttle(self, d: Duration) -> Throttle<Self>where
Self: Sized,
Available on
unstable
only.Limit the amount of items yielded per timeslice in a stream. Read more
source§fn step_by(self, step: usize) -> StepBy<Self>where
Self: Sized,
fn step_by(self, step: usize) -> StepBy<Self>where
Self: Sized,
Creates a stream that yields each
step
th element. Read moresource§fn chain<U>(self, other: U) -> Chain<Self, U>
fn chain<U>(self, other: U) -> Chain<Self, U>
Takes two streams and creates a new stream over both in sequence. Read more
source§fn cloned<'a, T>(self) -> Cloned<Self>
fn cloned<'a, T>(self) -> Cloned<Self>
Creates an stream which copies all of its elements. Read more
source§fn copied<'a, T>(self) -> Copied<Self>
fn copied<'a, T>(self) -> Copied<Self>
Creates an stream which copies all of its elements. Read more
source§fn cycle(self) -> Cycle<Self>
fn cycle(self) -> Cycle<Self>
Creates a stream that yields the provided values infinitely and in order. Read more
source§fn enumerate(self) -> Enumerate<Self>where
Self: Sized,
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
source§fn delay(self, dur: Duration) -> Delay<Self>where
Self: Sized,
fn delay(self, dur: Duration) -> Delay<Self>where
Self: Sized,
Available on
unstable
only.Creates a stream that is delayed before it starts yielding items. Read more
source§fn map<B, F>(self, f: F) -> Map<Self, F>
fn map<B, F>(self, f: F) -> Map<Self, F>
Takes a closure and creates a stream that calls that closure on every element of this stream. Read more
source§fn inspect<F>(self, f: F) -> Inspect<Self, F>
fn inspect<F>(self, f: F) -> Inspect<Self, F>
A combinator that does something with each element in the stream, passing the value
on. Read more
source§fn last(self) -> LastFuture<Self, Self::Item>where
Self: Sized,
fn last(self) -> LastFuture<Self, Self::Item>where
Self: Sized,
Returns the last element of the stream. Read more
source§fn fuse(self) -> Fuse<Self>where
Self: Sized,
fn fuse(self) -> Fuse<Self>where
Self: Sized,
Creates a stream which ends after the first
None
. Read moresource§fn filter<P>(self, predicate: P) -> Filter<Self, P>
fn filter<P>(self, predicate: P) -> Filter<Self, P>
Creates a stream that uses a predicate to determine if an element should be yielded. Read more
source§fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F>
fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F>
Available on
unstable
only.Creates an stream that works like map, but flattens nested structure. Read more
source§fn flatten(self) -> Flatten<Self>
fn flatten(self) -> Flatten<Self>
Available on
unstable
only.Creates an stream that flattens nested structure. Read more
source§fn filter_map<B, F>(self, f: F) -> FilterMap<Self, F>
fn filter_map<B, F>(self, f: F) -> FilterMap<Self, F>
Both filters and maps a stream. Read more
source§fn min_by_key<B, F>(self, key_by: F) -> MinByKeyFuture<Self, Self::Item, F>
fn min_by_key<B, F>(self, key_by: F) -> MinByKeyFuture<Self, Self::Item, F>
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 moresource§fn max_by_key<B, F>(self, key_by: F) -> MaxByKeyFuture<Self, Self::Item, F>
fn max_by_key<B, F>(self, key_by: F) -> MaxByKeyFuture<Self, Self::Item, F>
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 moresource§fn min_by<F>(self, compare: F) -> MinByFuture<Self, F, Self::Item>
fn min_by<F>(self, compare: F) -> MinByFuture<Self, F, Self::Item>
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 moresource§fn max(self) -> MaxFuture<Self, Self::Item>
fn max(self) -> MaxFuture<Self, Self::Item>
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 moresource§fn min(self) -> MinFuture<Self, Self::Item>
fn min(self) -> MinFuture<Self, Self::Item>
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 moresource§fn max_by<F>(self, compare: F) -> MaxByFuture<Self, F, Self::Item>
fn max_by<F>(self, compare: F) -> MaxByFuture<Self, F, Self::Item>
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 moresource§fn nth(&mut self, n: usize) -> NthFuture<'_, Self>
fn nth(&mut self, n: usize) -> NthFuture<'_, Self>
Returns the nth element of the stream. Read more
source§fn all<F>(&mut self, f: F) -> AllFuture<'_, Self, F, Self::Item>
fn all<F>(&mut self, f: F) -> AllFuture<'_, Self, F, Self::Item>
Tests if every element of the stream matches a predicate. Read more
source§fn find<P>(&mut self, p: P) -> FindFuture<'_, Self, P>
fn find<P>(&mut self, p: P) -> FindFuture<'_, Self, P>
Searches for an element in a stream that satisfies a predicate. Read more
source§fn find_map<F, B>(&mut self, f: F) -> FindMapFuture<'_, Self, F>
fn find_map<F, B>(&mut self, f: F) -> FindMapFuture<'_, Self, F>
Applies function to the elements of stream and returns the first non-none result. Read more
source§fn fold<B, F>(self, init: B, f: F) -> FoldFuture<Self, F, B>
fn fold<B, F>(self, init: B, f: F) -> FoldFuture<Self, F, B>
A combinator that applies a function to every element in a stream
producing a single, final value. Read more
source§fn partition<B, F>(self, f: F) -> PartitionFuture<Self, F, B>
fn partition<B, F>(self, f: F) -> PartitionFuture<Self, F, B>
Available on
unstable
only.A combinator that applies a function to every element in a stream
creating two collections from it. Read more
source§fn for_each<F>(self, f: F) -> ForEachFuture<Self, F>
fn for_each<F>(self, f: F) -> ForEachFuture<Self, F>
Call a closure on each element of the stream. Read more
source§fn any<F>(&mut self, f: F) -> AnyFuture<'_, Self, F, Self::Item>
fn any<F>(&mut self, f: F) -> AnyFuture<'_, Self, F, Self::Item>
Tests if any element of the stream matches a predicate. Read more
source§fn by_ref(&mut self) -> &mut Self
fn by_ref(&mut self) -> &mut Self
Available on
unstable
only.Borrows an stream, rather than consuming it. Read more
source§fn skip_while<P>(self, predicate: P) -> SkipWhile<Self, P>
fn skip_while<P>(self, predicate: P) -> SkipWhile<Self, P>
Combinator that
skip
s elements based on a predicate. Read moresource§fn skip(self, n: usize) -> Skip<Self>where
Self: Sized,
fn skip(self, n: usize) -> Skip<Self>where
Self: Sized,
Creates a combinator that skips the first
n
elements. Read moresource§fn timeout(self, dur: Duration) -> Timeout<Self>
fn timeout(self, dur: Duration) -> Timeout<Self>
Available on
unstable
only.Await a stream or times out after a duration of time. Read more
source§fn try_fold<B, F, T, E>(
&mut self,
init: T,
f: F,
) -> TryFoldFuture<'_, Self, F, T>
fn try_fold<B, F, T, E>( &mut self, init: T, f: F, ) -> TryFoldFuture<'_, Self, F, T>
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
source§fn try_for_each<F, E>(&mut self, f: F) -> TryForEachFuture<'_, Self, F>
fn try_for_each<F, E>(&mut self, f: F) -> TryForEachFuture<'_, Self, F>
Applies a falliable function to each element in a stream, stopping at first error and returning it. Read more
source§fn zip<U>(self, other: U) -> Zip<Self, U>
fn zip<U>(self, other: U) -> Zip<Self, U>
‘Zips up’ two streams into a single stream of pairs. Read more
source§fn unzip<A, B, FromA, FromB>(self) -> UnzipFuture<Self, FromA, FromB>
fn unzip<A, B, FromA, FromB>(self) -> UnzipFuture<Self, FromA, FromB>
Available on
unstable
only.Converts an stream of pairs into a pair of containers. Read more
source§fn collect<'a, B>(self) -> Pin<Box<dyn Future<Output = B> + Send + 'a>>
fn collect<'a, B>(self) -> Pin<Box<dyn Future<Output = B> + Send + 'a>>
Available on
unstable
only.Transforms a stream into a collection. Read more
source§fn merge<U>(self, other: U) -> Merge<Self, U>
fn merge<U>(self, other: U) -> Merge<Self, U>
Available on
unstable
only.Combines multiple streams into a single stream of all their outputs. Read more
source§fn partial_cmp<S>(self, other: S) -> PartialCmpFuture<Self, S>
fn partial_cmp<S>(self, other: S) -> PartialCmpFuture<Self, S>
Lexicographically compares the elements of this
Stream
with those
of another. Read moresource§fn position<P>(&mut self, predicate: P) -> PositionFuture<'_, Self, P>
fn position<P>(&mut self, predicate: P) -> PositionFuture<'_, Self, P>
Searches for an element in a Stream that satisfies a predicate, returning
its index. Read more
source§fn cmp<S>(self, other: S) -> CmpFuture<Self, S>
fn cmp<S>(self, other: S) -> CmpFuture<Self, S>
Lexicographically compares the elements of this
Stream
with those
of another using ‘Ord’. Read moresource§fn count(self) -> CountFuture<Self>where
Self: Sized,
fn count(self) -> CountFuture<Self>where
Self: Sized,
Available on
unstable
only.Counts the number of elements in the stream. Read more
source§fn ne<S>(self, other: S) -> NeFuture<Self, S>
fn ne<S>(self, other: S) -> NeFuture<Self, S>
Determines if the elements of this
Stream
are lexicographically
not equal to those of another. Read moresource§fn ge<S>(self, other: S) -> GeFuture<Self, S>
fn ge<S>(self, other: S) -> GeFuture<Self, S>
Determines if the elements of this
Stream
are lexicographically
greater than or equal to those of another. Read moresource§fn eq<S>(self, other: S) -> EqFuture<Self, S>
fn eq<S>(self, other: S) -> EqFuture<Self, S>
Determines if the elements of this
Stream
are lexicographically
equal to those of another. Read moresource§fn gt<S>(self, other: S) -> GtFuture<Self, S>
fn gt<S>(self, other: S) -> GtFuture<Self, S>
Determines if the elements of this
Stream
are lexicographically
greater than those of another. Read moresource§fn le<S>(self, other: S) -> LeFuture<Self, S>
fn le<S>(self, other: S) -> LeFuture<Self, S>
Determines if the elements of this
Stream
are lexicographically
less or equal to those of another. Read moresource§fn lt<S>(self, other: S) -> LtFuture<Self, S>
fn lt<S>(self, other: S) -> LtFuture<Self, S>
Determines if the elements of this
Stream
are lexicographically
less than those of another. Read more