GameMaker - multi-dimensional arrays

As you may know, GameMaker natively supports only 2-dimensional arrays with size up to 32000x32000.
However, in some cases, you may want to use arrays with 3 (or more) dimensions.
Small comparison table with descriptions below:

Stat\Method	array:offset	array:instance	ds_grid's	ds_map
Init (fill-up)	Slow	Slow	Fast	Slowest
Access (i/o)	Fast	Fast	Average	Average
Size limit	~109 cells	32k/dimension	Resizable	No
Index	Integer	Integer	Integer	String
Existance check	No	No	Not needed	Yes
Region operations	No	No	Yes	Only clearing
References	No	Partial (layer)	Yes	Yes

GameMaker - shuffling an array

In some cases you may want to shuffle contents of array.
Out of those, it may also happen that it can not be easily replaced by ds_list.
The following code can be used to sort an array relatively fast and finely:

var i, j, k;
for (i = 0; i < size; i += 1)
{
    j = irandom_range(i, size - 1)
    if (i != j)
    {
        k = data[i]
        data[i] = data[j]
        data[j] = k
    }
}

Where data is name of array variable, and size is array length (with elements being stored in indexes from 0 to (size - 1)).