Dynamically create variables out of array elements

Archive
1
:information_source: Attention Topic was automatically imported from the old Question2Answer platform.
:bust_in_silhouette: Asked By cheo

Is it possible to dinamycally create variables by using array elements or dictionary keys as variable names?

For instance:

var demo = ["var1","var2"]

func _ready():
    set(demo[0], "Hi")
    print(get(demo[0]))

I’m expecting to see “Hi” in the console, but I get a Null

2
:bust_in_silhouette: Reply From: Zylann

No, it doesn’t work this way. Variables made with var or accessed with get and set have to be declared somewhere first:

var demo = ["var1","var2"]

# Declaring
var var1
var var2

var demo = ["var1","var2"]

func _ready():
    set(demo[0], "Hi")
    print(get(demo[0]))

If you want dynamic vars created at runtime, you can use a dictionary:

var demo = ["var1","var2"]
var vars = {}

func _ready():
	vars[demo[0]] = "Hi"
	print(vars[demo[0]])

If you are reaaaaally desperate to use get and set for some reason, you can override _get and _set:

var demo = ["var1","var2"]
var vars = {}

func _ready():
    set(demo[0]) = "Hi"
    print(get(demo[0]))

func _get(key):
	return vars[key]

func _set(key, value):
	vars[key] = value