Objective-C has some really interested 64-bit tricks, here's a great blog post on the changes and how they affect things https://mikeash.com/pyblog/friday-qa-20

Objective-C has some really interested 64-bit tricks, here's a great blog post on the changes and how they affect things https://mikeash.com/pyblog/friday-qa-2013-09-27-arm64-and-you.html https://mikeash.com/pyblog/friday-qa-2013-09-27-arm64-and-yo...