NSDictionary category to deal with nil instead of NSNull objects created by NSJSONSerialization

NSDictionary+NSNullUtility.h

//
//  NSDictionary+NSNullUtility.h
//  
//
//  Created by Pablo Heredia on 12-07-12.
//  Copyright (c) 2012. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface NSDictionary (NSNullUtility)

- (id)notNullObjectForKey:(id)aKey;

@end

NSDictionary+NSNullUtility.m

//
//  NSDictionary+NSNullUtility.h
//  
//
//  Created by Pablo Heredia on 12-07-12.
//  Copyright (c) 2012. All rights reserved.
//

#import "NSDictionary+NSNullUtility.h"

@implementation NSDictionary (NSNullUtility)

- (id)notNullObjectForKey:(id)aKey
{
    id object = [self objectForKey:aKey];
    if (object == [NSNull null]) return nil;
    return object;
}

@end