Fundamentals of Computers iOS App - Lesson Summary

The key learning points from this module are:@Objc is used to expose functions to Objective-C code.Encapsulation is used in object oriented programming to restrict direct access to some of the object's components.There are 8 bits in one byte of data.Optionals is a type that can hold a value or no value.Force unwrapping optionals is the action of extracting the value contained inside an optional.