Traversing two-dimensional array, using for-in syntax

Question

I'm traversing through a two-dimensional array like this:

for (menuViewController *aSelection in mainDataArray) {
    ...
}

However, how do I access the lower arrays' data? This following code doesn't work, but gives you the idea of what I mean:

for (menuViewController *aSelection in mainDataArray) {
    NSLog(@"Data: %@", [aSelection objectAtIndex:2]);
}

Answer 1

If you are traversing an array within an array, can you try the following?

for (NSArray* aSelection in mainDataArray) {
    NSLog(@"Data: %@", [aSelection objectAtIndex:2]);
}

Answer 2

Why don't you do a second for-in statement

for (NSArray* aSelection in mainDataArray) {
    for (NSArray* bSelection in aSelection) {
        //Do something innovative :)
    }
}