When I use connect() to call a function, how can I send a argument to that function?

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:information_source: Attention Topic was automatically imported from the old Question2Answer platform.
:bust_in_silhouette: Asked By TheWanderingShadow

I am currently trying out the timer node to call a function, but at first glance it seems to be unable to activate a function that has an argument because I have to call the function by its name only.

func ready()
     timer = Timer.new()
     timer.set_wait_time(1)
     timer.connect("timeout", self, "activate")
     add_child(timer)
     timer.start()

func activate(arg)
     print(arg)

How can I use connect() in a way that lets me send an argument (a String in this case) to the function it calls?

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:bust_in_silhouette: Reply From: volzhs 
timer.connect("timeout", self, "activate", ["arg_value1", "arg_value2"])