Check that the contents of one NSArray are all in another array

Question

I have one NSArray with names in string objects like this:@[@\"john\", @\"smith\", @\"alex\", @\"louis\"], and I have another array that contains

Answer 1

Use NSArray filteredArrayUsingPredicate: method. Its really fast to find out similar types of object in both arrays

NSPredicate *intersectPredicate = [NSPredicate predicateWithFormat:@"SELF IN %@", otherArray];
NSArray *intersectArray = [firstArray filteredArrayUsingPredicate:intersectPredicate];

From above code intersect array gives you same objects which are in other array.