Creates a new topic subscription channel and returns it. Each topic is managed by its own Mult and can have arbitrary number of subscribers. If the optional transducer is given, it will only be applied to the new subscription channel.
The special "*" topic can be used to subscribe to all messages and acts as multiplexed pass-through of the source channel.
Creates a new topic subscription channel and returns it. Each topic is managed by its own Mult and can have arbitrary number of subscribers. If the optional transducer is given, it will only be applied to the new subscription channel.
The special "*" topic can be used to subscribe to all messages and acts as multiplexed pass-through of the source channel.