Question

I have the dictionary below and I would like to get access to all cities for a particular country. So if I select USA below, I want access to Dallas, Houston. For example I have the following function in mind but am not sure how to get all cities for country.

-(NSArray*) fetchCitiesFromLocationDictionary:(NSMutableDictionary *)locationDictionary usingCountry:(NSString *)country
{


}


{
    509f3a914d026b589ba3a090 =     {
        coordinates =         {
            latitude = "29.76429";
            longitude = "-95.3837";
        };
        country = USA;
        id = 509f3a914d026b589ba3a090;
        name = Houston;
        state = Texas;
    };
    509f3b3a4d026b589ba3a091 =     {
        coordinates =         {
            latitude = "3.138722";
            longitude = "101.686849";
        };
        country = Malaysia;
        id = 509f3b3a4d026b589ba3a091;
        name = "Kuala Lumpur";
    };
    509f475b4d026b589ba3a093 =     {
        coordinates =         {
            latitude = "32.803468";
            longitude = "-96.769879";
        };
        country = USA;
        id = 509f475b4d026b589ba3a093;
        name = Dallas;
        state = Texas;
    };
}

Answer 1

Try something like this:

NSDictionary *dictionary = [NSDictionary dictionary];
NSMutableArray *cities = [NSMutableArray array];
for (NSDictionary *individualDictionary in dictionary)
{
    if ([[individualDictionary objectForKey:@"country"] isEqualToString:@"USA"])
        [cities addObject:[individualDictionary objectForKey:@"name"]];
}