How to fire() without arguments?

[PierBover]

Sorry if this is obvious but I'm new to Swift.

I'd like fire a Signal without passing any argument.

I've resorted to using Signal<Int?>() and .fire(nil) but is there more elegant way of handling this?

[artman]

You can do:

let signal = Signal<Void>()
signal.fire(())

[PierBover]

Is there no way to simply do signal.fire() ?

[artman]

Unfortunately no. In Swift 4 you cannot omit the parameter even when calling a function that takes a void argument.