How to use unsigned int/char/long in GDScript?

:information_source: Attention Topic was automatically imported from the old Question2Answer platform.
:bust_in_silhouette: Asked By Geequlim
:warning: Old Version Published before Godot 3 was released.

In some case I have to load some data in unsigned integers.

For example a data file save data with uint_32[]

I load the array data into a RawArray, and then how to get intergers from it ?