Events
The event keyword is used to declare an event in a publisher class. The following code segment displays how to declare and raise an event.
class Publisher {
event SampleEvent: (sender: any, text: string),
function RaiseSampleEvent(text: string)
SampleEvent.Invoke(self, text)
end
}
Events can only be invoked from within a class, so they can be extremely useful when implementing a customizable API or library. One can assign a function to be called whenever the publisher class raises the event by doing the following:
function OnInvoked(sender, text: string)
print("SampleEvent has been invoked!")
end
local publisher: Publisher = Publisher()
publisher.SampleEvent += OnInvoked
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