Adding an object-oriented data repository to a project

Now, we will add one protocol and many classes we created in the previous chapter to generate the GameRepository class. We want to display a list of game names in the Picker View. We will add the following Swift source files in the project within the Chapter8 group:

  • Identifiable.swift
  • Entity.swift
  • Repository.swift
  • Game.swift
  • GameRepository.swift

Click on the Chapter8 group in Project Navigator (the icon represents a folder). Do not confuse it with the Chapter8 project that is the parent for the Chapter8 group. Navigate to File | New | File... and select Swift File as the template for your new file. Then, click on Next and enter Identifiable in the Save As textbox. Make sure that Chapter8 with the ...

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