Array & Dictionary

ao.m

NSArray *a = @[@"First",@"Second",@"Third"];

NSMutableArray *a2 = [[NSMutableArray alloc]initWithObjects:@"First",@"Second",@"Third",nil];
[a2 addObject:@"Fourth"];

as.m

let array = ["First","Second","Third"]
  
var array = ["First","Second","Third"]
array.append("Forth")

do.m

NSDictionary *d = [[NSDictionary alloc] initWithObjectsAndKeys:@"Value1", @"Key1", @"Value2", @"Key2", nil];

NSMutableDictionary *d2 = [[NSMutableDictionary alloc]initWithObjectsAndKeys:@"Value1", @"Key1", @"Value2", @"Key2", nil];
[d2 setObject:@"Value3" forKey:@"Key3"];

ds.m

let dictionary = ["Item 1": "description", "Item 2": "description"]

var dictionary = ["Item 1": "description", "Item 2": "description"]
dictionary["Item 3"] = "description"