Type Definition rxrust::prelude::LocalSubject

type LocalSubject<'a, Item, Err> = Subject<Rc<RefCell<Vec<Box<dyn Publisher<Item, Err> + 'a>>>>, LocalSubscription>;

Trait Implementations

impl<'a, Item, Err> LocalObservable<'a> for LocalSubject<'a, Item, Err>

type Unsub = LocalSubscription

fn actual_subscribe<O: Observer<Self::Item, Self::Err> + 'a>(
    self,
    subscriber: Subscriber<O, LocalSubscription>
) -> LocalSubscription

impl<'a, Item, Err> Observable for LocalSubject<'a, Item, Err>

type Item = Item

type Err = Err

fn first(self) -> TakeOp<Self> where
    Self: Sized, 

emit only the first item emitted by an Observable

fn first_or(self, default: Self::Item) -> FirstOrOp<TakeOp<Self>, Self::Item> where
    Self: Sized, 

emit only the first item emitted by an Observable

fn last_or(self, default: Self::Item) -> LastOrOp<Self, Self::Item> where
    Self: Sized, 

Emit only the last final item emitted by a source observable or a default item given.

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

Emits only last final item emitted by a source observable.

fn finalize<F>(self, f: F) -> FinalizeOp<Self, F> where
    Self: Sized,
    F: FnMut(), 

Call a function when observable completes, errors or is unsubscribed from.

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

Creates a new stream which calls a closure on each element and uses its return as the value.

fn map_to<B>(self, value: B) -> MapToOp<Self, B> where
    Self: Sized, 

Maps emissions to a constant value.

fn merge<S>(self, o: S) -> MergeOp<Self, S> where
    Self: Sized,
    S: Observable<Item = Self::Item, Err = Self::Err>, 

combine two Observables into one by merging their emissions

fn filter<F>(self, filter: F) -> FilterOp<Self, F> where
    Self: Sized,
    F: Fn(&Self::Item) -> bool, 

Emit only those items from an Observable that pass a predicate test # Example

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

The closure must return an Option. filter_map creates an iterator which calls this closure on each element. If the closure returns Some(element), then that element is returned. If the closure returns None, it will try again, and call the closure on the next element, seeing if it will return Some.

fn box_it<O: IntoBox<Self>>(self) -> BoxOp<O> where
    Self: Sized,
    BoxOp<O>: Observable<Item = Self::Item, Err = Self::Err>, 

box an observable to a safety object and convert it to a simple type BoxOp, which only care Item and Err Observable emitted.

fn skip(self, count: u32) -> SkipOp<Self> where
    Self: Sized, 

Ignore the first count values emitted by the source Observable.

fn skip_last(self, count: usize) -> SkipLastOp<Self> where
    Self: Sized, 

Ignore the last count values emitted by the source Observable.

fn take(self, count: u32) -> TakeOp<Self> where
    Self: Sized, 

Emits only the first count values emitted by the source Observable.

fn take_until<T>(self, notifier: T) -> TakeUntilOp<Self, T> where
    Self: Sized, 

Emits the values emitted by the source Observable until a notifier Observable emits a value.

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

Emits values while result of an callback is true.

fn take_last(self, count: usize) -> TakeLastOp<Self> where
    Self: Sized, 

Emits only the last count values emitted by the source Observable.

fn sample<O>(self, sampling: O) -> SampleOp<Self, O> where
    Self: Sized,
    O: Observable, 

Emits item it has most recently emitted since the previous sampling

fn scan_initial<OutputItem, BinaryOp>(
    self,
    initial_value: OutputItem,
    binary_op: BinaryOp
) -> ScanOp<Self, BinaryOp, OutputItem> where
    Self: Sized,
    BinaryOp: Fn(OutputItem, Self::Item) -> OutputItem,
    OutputItem: Clone, 

The Scan operator applies a function to the first item emitted by the source observable and then emits the result of that function as its own first emission. It also feeds the result of the function back into the function along with the second item emitted by the source observable in order to generate its second emission. It continues to feed back its own subsequent emissions along with the subsequent emissions from the source Observable in order to create the rest of its sequence.

fn scan<OutputItem, BinaryOp>(
    self,
    binary_op: BinaryOp
) -> ScanOp<Self, BinaryOp, OutputItem> where
    Self: Sized,
    BinaryOp: Fn(OutputItem, Self::Item) -> OutputItem,
    OutputItem: Default + Clone, 

Works like scan_initial but starts with a value defined by a Default trait for the first argument binary_op operator operates on.

fn reduce_initial<OutputItem, BinaryOp>(
    self,
    initial: OutputItem,
    binary_op: BinaryOp
) -> ReduceOp<Self, BinaryOp, OutputItem> where
    Self: Sized,
    BinaryOp: Fn(OutputItem, Self::Item) -> OutputItem,
    OutputItem: Clone, 

Apply a function to each item emitted by an observable, sequentially, and emit the final value, after source observable completes.

fn reduce<OutputItem, BinaryOp>(
    self,
    binary_op: BinaryOp
) -> LastOrOp<ScanOp<Self, BinaryOp, OutputItem>, OutputItem> where
    Self: Sized,
    BinaryOp: Fn(OutputItem, Self::Item) -> OutputItem,
    OutputItem: Default + Clone, 

Works like reduce_initial but starts with a value defined by a Default trait for the first argument f operator operates on.

fn max(self) -> MinMaxOp<Self, Self::Item> where
    Self: Sized,
    Self::Item: Clone + Send + PartialOrd<Self::Item>, 

Emits the item from the source observable that had the maximum value.

fn min(self) -> MinMaxOp<Self, Self::Item> where
    Self: Sized,
    Self::Item: Clone + Send + PartialOrd<Self::Item>, 

Emits the item from the source observable that had the minimum value.

fn sum(self) -> SumOp<Self, Self::Item> where
    Self: Sized,
    Self::Item: Clone + Default + Add<Self::Item, Output = Self::Item>, 

Calculates the sum of numbers emitted by an source observable and emits this sum when source completes.

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

Emits the number of items emitted by a source observable when this source completes.

fn average(self) -> AverageOp<Self, Self::Item> where
    Self: Sized,
    Self::Item: Clone + Send + Default + Add<Self::Item, Output = Self::Item> + Mul<f64, Output = Self::Item>, 

Calculates the sum of numbers emitted by an source observable and emits this sum when source completes.

fn publish<Subject: Default>(self) -> ConnectableObservable<Self, Subject> where
    Self: Sized, 

Returns a ConnectableObservable. A ConnectableObservable Observable resembles an ordinary Observable, except that it does not begin emitting items when it is subscribed to, but only when the Connect operator is applied to it. In this way you can wait for all intended observers to subscribe to the Observable before the Observable begins emitting items.

fn share<Subject, Inner>(
    self
) -> RefCount<Inner, ConnectableObservable<Self, Subject>> where
    Inner: RefCountCreator<Connectable = ConnectableObservable<Self, Subject>>,
    Subject: Default,
    Self: Sized + Clone, 

Returns a new Observable that multicast (shares) the original Observable. As long as there is at least one Subscriber this Observable will be subscribed and emitting data. When all subscribers have unsubscribed it will unsubscribe from the source Observable. Because the Observable is multicasting it makes the stream hot. This is an alias for publish().ref_count()

fn delay<SD>(self, dur: Duration, scheduler: SD) -> DelayOp<Self, SD> where
    Self: Sized, 

Delays the emission of items from the source Observable by a given timeout or until a given Instant.

fn delay_at<SD>(self, at: Instant, scheduler: SD) -> DelayOp<Self, SD> where
    Self: Sized, 

fn subscribe_on<SD>(self, scheduler: SD) -> SubscribeOnOP<Self, SD> where
    Self: Sized, 

Specify the Scheduler on which an Observable will operate

fn observe_on<SD>(self, scheduler: SD) -> ObserveOnOp<Self, SD> where
    Self: Sized, 

Re-emits all notifications from source Observable with specified scheduler.

fn throttle_time<SD>(
    self,
    duration: Duration,
    edge: ThrottleEdge,
    scheduler: SD
) -> ThrottleTimeOp<Self, SD> where
    Self: Sized, 

Emits a value from the source Observable, then ignores subsequent source values for duration milliseconds, then repeats this process.

fn zip<U>(self, other: U) -> ZipOp<Self, U> where
    Self: Sized,
    U: Observable, 

'Zips up' two observable into a single observable of pairs.

fn default_if_empty(self, default_value: Self::Item) -> DefaultIfEmptyOp<Self> where
    Self: Sized, 

Emits default value if Observable completed with empty result