Two Multi Dimensional Array with Objects

Question

I would like to use an NSDictionay (I think this is the correct method) to save data to in a class which is accessed by other classes:

.h

@property (retain, nonatomic) NSArray   *NameKey;
@property (retain, nonatomic) NSArray   *DataFields;
@property (retain, nonatomic) NSDictionary *MDArray;

.m

@synthesize NameKey;
@synthesize DataFields;
@synthesize MDArray;

- (id) init
{
        NameKey = [NSArray arrayWithObjects:@"DeviceName",nil];
        DataFields = [NSArray arrayWithObjects:@"Serial", nil];
        MDArray = [NSDictionary dictionaryWithObjects:DataFields forKeys:NameKey];
}

Couple of questions:

1. Is this the correct method for setting up an NSDictionary?

2. How you I add/delete/modify the data. Assuming that the name was unique

Thanks in advance.

Answer 1

Why not use modern syntax:

MDArray = @{ @"DeviceName": @"Serial" }

If you want a mutable version you can send it the mutableCopy message

Answer 2

The way I solved this was to:

devices = [[NSMutableArray alloc] init];
dataFields = [[NSArray alloc] initWithObjects:@"Name",@"Type", nil];

NSArray *addDevice = [[NSArray alloc] initWithObjects:@"MM-TEST",@"-- --", nil];
NSDictionary *infoblock = [[NSMutableDictionary alloc] initWithObjects:addDevice forKeys:dataFields];
[devices addObject:infoblock];

Seems to work fine.