Objective-C. Check out the engineering blog post here: https://www.facebook.com/notes/facebook-engineering/under-the-hood-rebuilding-facebook-for-ios/1015103609

Objective-C. Check out the engineering blog post here: https://www.facebook.com/notes/facebook-engineering/under-the-hood-rebuilding-facebook-for-ios/10151036091753920 https://www.facebook.com/notes/facebook-engineering/under-th...