How to get the first x elements of an NSArray in Cocoa?

Question

New in Cocoa and something seems to be missing.

What is the most elegant / idiomatic way to get the first x elements of an NSArray as another NSArray ? Obviously, I can iterate over them and store them manually, but it seems that this requires a more standard method.

I was expecting to be -arrayWithObjectsInRange: or something similar, but can't see anything ...

 NSArray* largeArray...// Contains 50 items... NSArray* smallArray = // fill in the blank // smallArray contains first 10 items from largeArray 

Thank!

Answer 1

You can use subarrayWithRange:

 NSArray *smallArray = [largeArray subarrayWithRange:NSMakeRange(0, 10)]; 

Answer 2

 firstNItems = [items subarrayWithRange:NSMakeRange(0, MIN(n, items.count))]; 

Answer 3

The second parameter is the number of elements in the array, which should be included in the range, not the "to" index

Answer 4

In Swift 3, you can use this:

 let smallArray = largeArray.prefix(10)