Swift is a sleek, modern programming language that was designed for safety and speed. Its intended replacement of C-based languages makes it yet another powerful tool in any developer's arsenal - one capable enough to tackle anything from small iOS apps all the way up through complex system level work.

We can use the Swift Development package manager to build, run tests on our code and even packages. The tool has a very simple interface which makes it easy for anyone else who wants access to these functions too. Swift protocols allow you to define behaviour on a protocol itself, rather than in global functions or individual conformances.