Question

If I have a NSArray, can I put this into a NSDictionary?
If so, how can I do this?

Answer 1

An NSDictionary can use any objects as values, and any objects that conforms to NSCopyingas keys. So in your case:

NSArray * myArray = [NSArray arrayWithObjects:@"a", @"b", @"c"];

NSDictionary * dict = [NSDictionary dictionaryWithObject:myArray forKey:@"threeLetters"];

NSMutableDictionary * mutableDict = [NSMutableDictionary dictionaryWithCapacity:10];
[mutableDict setObject:myArray forKey:@"threeLetters"];