title: Create an instance of a class inside its own self
body: <p>Here's the situation.
  I have a swift model class file that contains all the variables for a weather forecast (min temperature, max temperature, humidity, etc).
  The class also contains the function that downloads all the data from the API.
  My question is, is it possible to create an array of the class inside the class itself, so that I can append a number of objects (of the same class itself) based on the number of days of forecast the API sends back?
  If so, can you tell me how it could be achieved?
  The other option I have that totally works, is to do the API downloading and parsing outside of the forecast class (in the ViewController) but that would make my ViewController messy.</p>