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iOS Objective-C Basics (Retired) Foundation Framework NSDictionary

Posted by bronnyreinhardt
bronnyreinhardt
1,007 Points

Adding different classes to NSMutableDictionary

In the following code, I can only add one type of value using NSMutableDictionary, in this case integers.

int main()
{
    NSDictionary *book = @{@"title":@"The Cat in the Hat", @"author":@"Dr. Seuss"};
    NSLog(@"book %@", book);

    NSMutableDictionary *mutableBook = [NSMutableDictionary dictionaryWithDictionary:book];
    [mutableBook setObject:@1957 forKey:@"year"];
    [mutableBook setObject:@50 forKey:@"extent"];
    NSLog(@"%@", mutableBook);

    return 0;
}

What if I wanted to make the key 'extent' return the value 'fifty' (i.e. a string instead of an integer)? Do I have to create another NSMutableDictionary?

Navid Mirzaie Milani
Navid Mirzaie Milani
6,274 Points
Navid Mirzaie Milani
Navid Mirzaie Milani
6,274 Points

You can put every Object in an NSDictonary you want ;), if you want to store a object that points to a class you are free to do that.