PubSub class

PubSub manages its subscriptions. You can subscribe and unsubscribe to topics, send them messages. Example:

PubSub pubsub = PubSub();
Subscription? sub = pubsub?.subscribe('topic');
sub?.stream?.listen((message) {
  print(message);
});

pubsub.publish('topic', 'hello');
// console log - hello
pubsub.unsubscribe(sub);

Constructors

PubSub({String? name})

Properties

hashCode → int

The hash code for this object.

no setter, inherited

name ↔ String?

Default name. If you want to use multiple pubsub you can set a name for each.

getter/setter pair

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

getTopics() → Set<String?>?

Return set of pubsub topics

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

publish(String? topic, dynamic message) → void

Sends messages to all subscribers of this topic.

publishAll(dynamic message) → void

Sends messages to all subscribers of all topics.

publishMany(Set<String?> topics, dynamic message) → void

Sends messages to all subscribers of several topics.

subscribe(String? topic) → Subscription?

Creates and stores a subscription to a topic. Return Subscription.

subscribeToMany(Set<String?>? topics) → Subscription?

Creates and stores a subscription to several topics. Return Subscription.

toString() → String

A string representation of this object.

inherited

unsubscribe(Subscription? subscription) → Future<void>?

Deletes a subscription to a topic.

unsubscribeAll(String? topic) → Future<void>?

Deletes all subscriptions to the specified topic.

unsubscribeMany(List<Subscription?>? subscribers) → Future<void>?

Deletes multiple subscriptions at a time.

Operators

operator ==(Object other) → bool

The equality operator.

inherited