Swift has been among StackOverflow’s “most loved” languages every year since its 2014 release. With examples from the MongoDB Swift driver, this talk will highlight unique, powerful features of Swift, and discuss the challenges of writing good code in a young, flexible and rapidly changing language. Attendees will come away informed about some of the advantages and challenges of writing code in Swift. They will be better prepared to write idiomatic Swift of their own, and will have a deeper understanding of how a MongoDB driver works.