Question

Does iOS support something like

s = { x:3,y:5 , o:{x:0,y:1}} 

like in Javascript?

Or what is the best way to use something like this in iOS?

Answer 1

A literal translation would be :

NSDictionary *s = [NSDictionary dictionaryWithObjectsAndKeys:
                        [NSNumber numberWithInt:3], @"x",
                        [NSNumber numberWithInt:5], @"y",
                        [NSDictionary dictionaryWithObjectsAndKeys:
                                 [NSNumber numberWithInt:0], @"x",
                                 [NSNumber numberWithInt:1], @"y",
                                  nil ], @"o",
                        nil  ];

But literal translations, even in programming languages, are not best. It all depends on the context and what you need to accomplish. There’s probably less code required depending on what you need.

---

EDIT: There’s now a new literal syntax allowing to shrink this code further:

NSDictionary *s = @{ @"x": @3
                   , @"y": @5
                   , @"o": @{ @"x": @0, @"y": @1}
                   };

This syntax implicitely creates the NSDictionary & NSNumber objects.