https://medium.com/thecreateschool/migrating-from-swift-4-to-swift-5-2f425b99436b

YAY! Swift 5 is finally here. ?It’s the next major release of Swift and it brings ABI Stability at last. Besides this, several new key features are also added which include raw Strings, future enum cases, a Result type, checking multiple integers and more.

We will cover all the features about Swift 5 later in another article whose link I will provide soon enough. For now, we will talk about migrating our existing Swift 4 code to Swift 5.