Why is this the most performance friendly way of creating a 2D Array

cloa513

https://godotengine.org/qa/5122/how-do-i-create-a-2d-array

According to mateusak This is the best way

func create_2d_array(width, height, value):
    var a = []

    for y in range(height):
        a.append([])
        a[y].resize(width)

        for x in range(width):
            a[y][x] = value

    return a

TwistedTwigleg

It’s because GDScript doesn’t have a way to define a multidimensional array with a constructor and so you have to construct the multidimensional array by creating an array of arrays. This is in part due to the fact that, in GDScript, an array can hold a reference to any data type. In this way, it’s very similar to the Python programming language.

In the future with Godot 4, I believe typed arrays can be defined, so it may be possible in Godot 4.0 to construct a multidimensional array in a way similar to C# and other typed languages in Godot 4.0.

cloa513

Thank you for your reply but if you look at the other answers to create a 2D they also create 2D Arrays- why is this function the best (if it is the best)? I was thinking if they will do that in Godot 4- I hope it will be well documented.