Working with API objects in the Xcode Playground
Now, let's forget a bit about geometry, shapes, polygons, perimeters, and areas. We will interact with API objects in the Xcode Playground. You still need to learn many things before we can start creating object-oriented code. However, we will write some code in the Playground to interact with an existing API before we move forward with our journey into the object-oriented programming world.
The following example interacts with an iOS API, and therefore, you cannot run it in Ubuntu or in the web-based IBM Swift Sandbox. However, you will be able to run most of the examples that don't interact with iOS APIs in the forthcoming chapters.
Object-oriented programming is extremely useful when you have ...