what does the "." operator do?

UnknownUser

new to GDscript, I have a rough idea of what this operator does. I know a little c++, is it the same here as it is there? does the . operator just access a piece of information that's a child to something?

TwistedTwigleg

In GDScript, the . operator allows you to access functions and properties stored in whatever object is behind it. It works just like C++ in that regard.

Calinou

In GDScript, using . at the beginning of a line allows you to call parent methods as well:

extends "res://some_script.gd"

func _ready():
    # Calls `setup()` from `some_script.gd`.
    .setup()

Note that the line above will be replaced by super.setup() in Godot 4.0 to make this more explicit.