Question

I’m converting diverse JSON objects to structured objects and want to iterate over all the nodes to process each one hierarchically. JSON framework supports conversion to an NSDictionary, which I thought was unstructured. I want to recursively iterate through each item and pay respect to the structure. How would this be done with either a dictionary or generic NSOBject?

Example:

- (void) processParsedObject:(NSDictionary *)obj
{
    if (atTheEndOfTheTail) {
        NSLog(@"Object description: %@\n\n", obj.description);

    }
    for (id object in obj) {
        [self processParsedObject:object];
    }
}

Update:

I asked the question more clearly here (with answer):

Recursively traverse NSDictionary of unknown structure

Answer 1

You can enumerate all the keys in an NSDictionary using:

NSEnumerator* keyEnum = [myDictionary keyEnumerator];
NSObject* nextKey;
while ((nextKey = [keyEnum nextObject]) != nil)
{
    NSObject* nextValue = [myDictionary objectForKey:nextKey];
    //... do something with the object and/or key ...
}