aenhsaihan

def build_root(self, iterable):
    collection = list(iterable)
    assert(len(collection) != 0)
    if len(collection) % 2 != 0:
        collection.append(collection[-1])
    collection = [self.__Node(self.digest(x)) for x in collection]
    return self.__build_root(collection)

def __build_root(self, collection):
    size = len(collection)

aenhsaihan

if (jsonData2 != nil) {
            
            NSError *errorInfo2;
            
            id backToDict = [NSJSONSerialization JSONObjectWithData:jsonData2 options:NSJSONReadingMutableContainers error:&errorInfo2];
            
            if (!backToDict) {
                NSLog(@"%@", [errorInfo2 localizedDescription]);
            } else {
                NSLog(@"%@", backToDict);