how to define 2x2 array in ios? - objective-c

Question

how to define 2x2 or 3X.. array in ios?
like this
[name=john , age=21 , num=1]
[name=max , age=25 , num=2]
[name=petter , age=22 , num=3]
with columns
in NSMutableArray you can only add rows with objects;
i want this array[][]

Answer 1

Looking at your example, I wouldn't do it with arrays, or not just arrays. I'd have an array of dictionaries or an array of custom objects with the properties name, age and num. With dictionaries:
NSArray* theArray = [NSArray arrayWithObjects:
[NSDictionary dictionaryWithObjectsAndKeys:
#"john", #"name",
[NSNumber numberWithInt: 21], #"age",
[NSNumber numberWithInt: 1], #"num",
nil],
[NSDictionary dictionaryWithObjectsAndKeys:
#"max", #"name",
[NSNumber numberWithInt: 25], #"age",
[NSNumber numberWithInt: 2], #"num",
nil],
[NSDictionary dictionaryWithObjectsAndKeys:
#"petter", #"name",
[NSNumber numberWithInt: 22], #"age",
[NSNumber numberWithInt: 3], #"num",
nil],
nil];

Answer 2

How to declare a two dimensional array of string type in Objective-C? might give you an idea

Answer 3

So many ways ...
NSMutableArray *array = [[NSMutableArray alloc] init];
NSMutableDictionary *person = [[[NSMutableDictionary alloc] init] autorelease];
[person setObject:#"john" forKey:#"name"];
[person setObject:[NSNumber numberWithInt:21] forKey:#"age"];
...
[array addObject:person];
... or create your custom class, which does hold all person data, or struct, or ... Depends on your goal.

Answer 4

It looks like you should be create a proper data storage class to store this in, rather than a dictionary or something like that.
e.g.
#interface Person : NSObject {
}
#property (nonatomic, copy) NSString* Name;
#property int age;
#property int num;
#end
Then create your person instances and store them in an array. You may wich to create some connivence methods first. e.g.
[[NSArray arrayWithObjects:[Person personWithName:#"Bob",Age:1 Num:3],
[Person personWithName:#"Bob",Age:1 Num:3],
[Person personWithName:#"Bob",Age:1 Num:3],nil];
Its much clearer.