Weekly Swift articles, podcasts and tips by John Sundell.
Let’s take a look at how combining value and reference types can unlock some really powerful capabilities, enabling us to utilize both the convenience of reference types, and the safety and limited mutability of value types.
One way of transforming values in Swift is by mapping a collection into an array of new values, using a transform. The Swift standard library offers three main APIs for that kind of mapping — map, flatMap and compactMap. Let’s take a look at how they work.