BehaviorSubject

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

Represents a value that changes over time.

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

  • Declaration

    Swift

    public typealias SubjectObserverType = BehaviorSubject<Element>

  • Indicates whether the subject has any observers

    Declaration

    Swift

    public var hasObservers: Bool { get }

  • Indicates whether the subject has been disposed.

    Declaration

    Swift

    public var isDisposed: Bool { get }

  • Initializes a new instance of the subject that caches its last value and starts with the specified value.

    Declaration

    Swift

    public init(value: Element)

    Parameters

    value

    Initial value sent to observers when no other value has been received by the subject yet.

  • Gets the current value or throws an error.

    Declaration

    Swift

    public func value() throws -> Element

    Return Value

    Latest value.

  • Notifies all subscribed observers about next event.

    Declaration

    Swift

    public func on(_ event: Event<E>)

    Parameters

    event

    Event to send to the observers.

  • Subscribes an observer to the subject.

    Declaration

    Swift

    public override func subscribe<O>(_ observer: O) -> Disposable where Element == O.E, O : ObserverType

    Parameters

    observer

    Observer to subscribe to the subject.

    Return Value

    Disposable object that can be used to unsubscribe the observer from the subject.

  • Returns observer interface for subject.

    Declaration

    Swift

    public func asObserver() -> BehaviorSubject<Element>

  • Unsubscribe all observers and release resources.

    Declaration

    Swift

    public func dispose()