Advanced and Practical Enum usage in Swift

API Endpoints

released Fri, 01 Mar 2019
Swift Version 5.0

API Endpoints

Rest APIs are a great use case for enums. They're naturally grouped, they're limited to a finite set of APIs, and they may have additional query or named parameters which can be modelled through associated values.

Take, for example, a look at a simplified version of the Instagram API

enum Instagram {

   enum Media {

     case popular

     case shortcode(id: String)

     case search(lat: Float, 

                 min_timestamp: Int, 

                 lng: Float, 

                 max_timestamp: Int, 

                 distance: Int)


   enum Users {

     case user(id: String)

     case feed

     case recent(id: String)



Ash Furrow's Moya library is based around this idea of using enums to map rest endpoints.