What is an easy way to break an NSArray with 4000+ objects in it into multiple arrays with 30 objects each?

Question

What is an easy way to break an NSArray with 4000 objects in it into multiple arrays with 30 objects each?

So right now I have an NSArray *stuff where [stuff count]

Answer 1

Converted the answer of @samvermette to SWIFT 3

        var arrayOfArraySlices = [ArraySlice]() // array of array slices

        var itemsRemaining = orderArray.count
        var j = 0

        while itemsRemaining > 0 {
            let range = NSRange(location: j, length: min(20, itemsRemaining));
            let arraySlice = orderArray[range.location..