While this is what a lot of people believe, it happens to not be true. For more details, see iOS and macOS Performance Tuning: Cocoa, Cocoa Touch, Objective-C,

While this is what a lot of people believe, it happens to not be true. For more details, see iOS and macOS Performance Tuning: Cocoa, Cocoa Touch, Objective-C, and Swift, Addison-Wesley https://www.amazon.com/iOS-macOS-Performance-Tuning-Objective-C/dp/0321842847 https://www.amazon.com/iOS-macOS-Performance-Tuning-Objectiv... If you don't want to read a book, here is an example as a series of blog posts: https://blog.metaobject.com/2020/04/somewhat-less-lethargic-json-support.html https://blog.metaobject.com/2020/04/somewhat-less-lethargic-...