Yield as the ultimate coroutine

infinite_yield.gd

extends Node

func yielder():
	print("Holla")
	yield()
	return yielder()

func returny_yielder():
	print(yield())
	return returny_yielder()

func _ready():
	yielder().resume().resume().resume()
	# this structure can be resumed infinite times theoritically
	# if even this didn't tingle those neurons 
	# let's try something else
	returny_yielder().resume("Namaste").resume("Hello").resume("Hi")

# PS: This on it's own is rather useless but this gives you all some ideas hopefully

# a more sane example would be the function yields multiple times in multiple ways 
# to accept different kinds of inputs to further do indirect recursive calls using signals as 
# notifiers look at the notifier example to get some ideas how that could be done