Swift is an exciting and intuitive programming language developed by Apple to be easier to learn than Objective C. It's syntax also more closely resembles JavaScript. Some native libraries you could work with may have been developed with Swift. Let’s look at a couple cases you could run into when trying to work with a Swift based iOS library. In particular, we will be implementing this Swift 3.0 CocoaPod. Also learn how to write files to your app’s document folder using NativeScript’s ‘file-system’ module.