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

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Off the top of my head, something like (untested):

NSMutableArray *arrayOfArrays = [NSMutableArray array];

int itemsRemaining = [stuff count];
int j = 0;

while(itemsRemaining) {
    NSRange range = NSMakeRange(j, MIN(30, itemsRemaining));
    NSArray *subarray = [stuff subarrayWithRange:range];
    [arrayOfArrays addObject:subarray];
    itemsRemaining-=range.length;
    j+=range.length;
}

The MIN(30, i) takes care of that last array that won’t necessarily have 30 items in it.

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