Mastering Kotlin

Reduced complexity

Immutability and the limitation of side effects in our programs work to reduce the complexity of those programs. Some code bases are complex out of necessity; the problem itself is complex. However, many code bases become complex because it's no longer clear how the state is expressed, managed, or manipulated. It is in cases like these where functional programming might be of great benefit.

Writing functional code in Kotlin can help us to reduce complexity in a several specific ways:

• Kotlin enables us to enforce immutability through the usage of data classes. Data classes make it extremely easy to define immutable models with which to represent state. The following is one such example in which we've defined an immutable ...