Apple is pretty good about automating the conversion of Swift to the newer version. Swift 2 to 3 was a little bit of work but the new succinct syntax was worth

Apple is pretty good about automating the conversion of Swift to the newer version. Swift 2 to 3 was a little bit of work but the new succinct syntax was worth it. It doesn’t sound like there will be many breaking changes in 5.0: “As with Swift 4.2, the vast majority of sources that built with the Swift 4.2 compiler should compile with the Swift 5.0 compiler”