block declaration pattern

gistfile1.m

NSDictionary* (^SetODataTypesInDictionary)(NSDictionary *dictionary) = ^NSDictionary* (NSDictionary *inputDict) {
    
    NSMutableDictionary *mutableObj = [NSMutableDictionary dictionaryWithDictionary:inputDict];
    
    NSArray *allKeys = [mutableObj allKeys];
    [allKeys enumerateObjectsUsingBlock:^(NSString *key, NSUInteger idx, BOOL *stop) {
        NSObject *propValue = [(id<SODataProperty>)[mutableObj objectForKey:key] value];
        
        if  ([propValue isKindOfClass:[NSDictionary class]]) {
            
            propValue = SetODataTypesInDictionary((NSDictionary *)propValue);
        }
        [mutableObj setValue:propValue forKey:key];
        
    }];
    return [NSDictionary dictionaryWithDictionary:mutableObj];
};