I had done the opposite for a hobby scheme-like interpreter found in github from Java into ObjC, but finding various difficulties doing the same into Swift at t

I had done the opposite for a hobby scheme-like interpreter found in github from Java into ObjC, but finding various difficulties doing the same into Swift at the early days of it. Converting that piece of Java codes into ObjC was easy and straightforward because it was basically just some Foundation classes, e.g. NSString, NSArray, NSDictionary and NSNumber.