KVC with NSArrays NSArrays

Question

I have an array of arrays on which I want to use KVC (at least I think what I am doing - it seems the easiest way), but I cannot figure out how to create key paths for individual array indices. My array looks like this:

NSArray [

NSArray [0, 1, 2, 3], NSArray [4, 5, 6, 7], NSArray [8, 9, 10, 11]

]

What I want to do is get the maximum value of index 3 in the internal array. It seems like something like [outerArray valueForKey: @ "@max. [3]"] will work, but I can't understand the syntax, and my Googling was also fruitless. Am I trying to do what I am trying to do, or just write a method for this manually?

Answer 1

Most people expect this to be, but KVC does not really allow you to consider individual array indexes. You can work with the entire array or array transformations (for example, @distinctUnionOfArrays), but you cannot access individual elements. You will need to do this "manually", so to speak.