February 23, 2018 Meeting

We will meet at our usual time and place: 5:45 PM at 25N Coworking

Finalize Plans for our Jellyvision Field trip!

Continue working on our multi-component Weather Wear software :

• Review overall solution architecture: 

  • Lucid Chart diagram by Robin

• C#/Swift Tutorial: Learn/review some object-oriented concepts

  • Classes and Objects: Properties (values) and Methods (behaviors defined in functions/procedures)
  • How are they defined and used in C#? In Swift?
  • Objects as Models for Data:
    • Tools:
      • Online tool to convert JSON to CSharp
      • Online JSON Viewer showing object structure
    • What is the data model for the JSON returned from the Weather Underground API Request for the Forecast?
    • What is the data model for the JSON returned from the API of the WeatherWear Web Service we are building?
    • Can/should the WeatherWear data model inherit the Weather Underground Forecast data model?

• Web Service Team:

  • Merge Web API code with the GitHub Repo
  • Continue work on algorithm and implementation of the WeatherWear Web Service and the console app to test it

• Swift Team:

  • MVC: Model/View/Controller design pattern
    • Model represents the data model defined in a class; we will create a model class for the Weather Forecast, and later for the WeatherWear API Response
    • View is the Presentation Layer, i.e, the screen the user sees
    • Controller: Code that handles the user input, talks to the model, handles interactions between Model and View. In Swift, we will define a Class for the controller; there will be a ViewController Class defined for each View
  • Review/Learn how to connect UI elements to code. Elements in the UI designed on the storyboard need to be connected to code in the appropriate controller:
    • @IBOutlet: in a code module, an Interface Builder Outlet is a variable that holds a reference to an element on the storyboard. Example:  our screen has a label to display a city name and we need our code to be able to access it. We add this to our view controller:

 @IBOutlet weak var cityLabel: UITextField!

• • •  @IBAction: in a code module, an Interface Builder Action is a function that is connected to a user interaction with a UI element. Example: update the city label when the user clicks a button. We add a connection between the function named GetWeather and the button; then define the action inside the function

      @IBAction func GetWeather(_ sender: Any) { cityLabel.text = “Geneva”    }

  • Start setting up the code to send the Web API Request for WeatherWear
    • We will initially set up code to access the existing Weather Underground Forecast API