Does GDScript have invocation and callbacks?

Question

I'm just learning my second programming language with godot, so applying my knowledge is kinda hard right now.

Does GDScript offer the same polymorphism as c#/++?

Answer 1

Yes. This can be implemented by using a FuncRef

• First create a method that will be called with the "callback" (In different programming languages: Completion/Block/Closure/... etc.)

func completion_method():
    pass # To do something
    
func completion_method_with_params(p1: String, p2: int):
    pass # To do something 

• Then create a method that will receive our "callback"

func some_method(completion: FuncRef, completion_with_params: FuncRef):
    # To do something
    completion.call_func()
    # To do something
    completion.call_funcv(["kurtsev", 0103])
    # To do something

• And now create a reference to the "callback" and just pass it to the method

var completion = funcref(self, "completion_method")
var completion_with_params = funcref(self, "completion_method_with_params")
    
some_method(completion, completion_with_params)