signalExample.swift

// creating a signal
let (signal, sink) = Signal<Int, NoError>.pipe()

// function called when button is tapped
func buttonTapped(sender: UIButton) {
	// sending random value down the stream
	sendNext(sink, random() % 3)
}

// somewhere in the application
signal.observeNext {(value) -> () in
	// print received value
	print(value)
}