Subjects

  • Represents a value that changes over time.

    Observers can subscribe to the subject to receive the last (or initial) value and all subsequent notifications.

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    Declaration

    Swift

    public final class BehaviorSubject<Element>
    : Observable<Element>
    , SubjectType
    , ObserverType
    , SynchronizedUnsubscribeType
    , Disposable

  • Represents an object that is both an observable sequence as well as an observer.

    Each notification is broadcasted to all subscribed observers.

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    Declaration

    Swift

    final public class PublishSubject<Element>
    : Observable<Element>
    , SubjectType
    , Cancelable
    , ObserverType
    , SynchronizedUnsubscribeType

  • Represents an object that is both an observable sequence as well as an observer.

    Each notification is broadcasted to all subscribed and future observers, subject to buffer trimming policies.

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    Declaration

    Swift

    public class ReplaySubject<Element>
    : Observable<Element>
    , SubjectType
    , ObserverType
    , Disposable

  • Represents an object that is both an observable sequence as well as an observer.

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    Declaration

    Swift

    public protocol SubjectType : ObservableType

  • Variable is a wrapper for BehaviorSubject.

    Unlike BehaviorSubject it can’t terminate with error, and when variable is deallocated it will complete it’s observable sequence (asObservable).

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    Declaration

    Swift

    public class Variable<Element>