Swift & Objective-C Protocols

This is a demo project for the video about the similarities, differences, and efficient use of Swift and Objective-C protocols.

You’ll find different stages of the project in separate branches.

Tasks

• Create a starter project
• Implement the Objective-C protocol (StringManipulatorProtocol) in the Swift object (StringManipulator)
• Fix the crash that occurs when the non-implemented optional method is called
• Replace WordProcessor with a Swift version and use the better way to handle the optional method
• Declare the WordProcessorDelegate protocol in Swift and implement it in Objective-C (ViewController)
• Mark the protocol’s methods as optional and remove the unneeded method implementations