Recall & Review
beginner
What is the Repository pattern in mobile app development?
The Repository pattern is a way to organize code that separates data access logic from the rest of the app. It acts like a middleman between the app and data sources, making it easier to manage and test data operations.
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beginner
Why use the Repository pattern in an iOS app?
Using the Repository pattern helps keep your app clean and organized. It hides where data comes from (like a database or web service), so the app code doesn’t need to change if the data source changes.
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intermediate
In Swift, what does a Repository typically provide?
A Repository usually provides methods to fetch, save, update, or delete data. These methods return data in a simple way, so the rest of the app can use it without worrying about details.
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intermediate
How does the Repository pattern improve testing?
Because the Repository hides data sources, you can replace it with a fake or mock version during testing. This lets you test app logic without needing real data or network calls.
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beginner
Give a simple example of a Repository interface in Swift.
protocol UserRepository {
func fetchUsers() async throws -> [User]
func saveUser(_ user: User) async throws
}
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What is the main role of a Repository in an app?
✗ Incorrect
The Repository manages data access and hides where data comes from, keeping the app code clean.
Which benefit does the Repository pattern provide for testing?
✗ Incorrect
Repositories can be swapped with fake versions during tests, so real data or network calls are not needed.
In Swift, how do you define a Repository interface?
✗ Incorrect
A protocol defines the methods a Repository must implement, like fetching or saving data.
What kind of methods does a Repository usually have?
✗ Incorrect
Repositories provide methods to work with data, such as fetching or saving.
Which of these is NOT a reason to use the Repository pattern?
✗ Incorrect
Repository pattern does not directly affect navigation speed; it focuses on data management.
Explain the Repository pattern and why it is useful in iOS app development.
Think about how your app talks to data and how Repository helps keep that simple.
You got /4 concepts.
Describe how you would create a simple UserRepository in Swift and what methods it might have.
Focus on the interface that hides data details from the rest of the app.
You got /4 concepts.