EventMultiple<T> class

An Event from multiple sub-events. When consuming this event, if the first sub-event is not spent, it will be consumed, and the second will not. If the first sub-event is spent, the second one will be consumed.

So, if both sub-events are NOT spent, the multiple-event will have to be consumed twice to consume both sub-events.

If both sub-events are spent, the multiple-event returns null when consumed.

For example:
Event getTypedMessageEvt() {
   return EventMultiple(setTypedMessageEvt, widget.setTypedMessageEvt);
 }
Inheritance

Constructors

EventMultiple(Event? evt1, Event? evt2)

Properties

evt1 ↔ Event<T>
getter/setter pair
evt2 ↔ Event<T>
getter/setter pair
hashCode → int
  • If two objects are equal according to the equals method, then hashcode of both must be the same. Since spent events are all equal, they should produce the same hashcode.
  • If two objects are NOT equal, hashcode may be the same or not, but it's better when they are not the same. However, events are mutable, and this could mean the hashcode of the state could be changed when an event is consumed. To avoid this, we make events always return the same hashCode.
    • no setterinherited
    isNotSpent → bool
    no setterinherited
    isSpent → bool
    no setteroverride
    runtimeType → Type
    A representation of the runtime type of the object.
    no setterinherited
    state → T?
    Returns the event state.
    no setteroverride

    Methods

    consume() → T?
    Returns the event state and consumes the event.
    override
    noSuchMethod(Invocation invocation) → dynamic
    Invoked when a nonexistent method or property is accessed.
    inherited
    toString() → String
    A string representation of this object.
    inherited

    Operators

    operator ==(Object other) → bool
    The StoreConnector has a distinct parameter which may be set to true. As a performance optimization, distinct:true allows the widget to be rebuilt only when the ViewModel changes. If this is not done, then every time any state in the store changes the widget will be rebuilt.
    inherited