Apple App Development with Swift Certified User : App-Development-with-Swift-Certified-User

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Apple App-Development-with-Swift-Certified-User Exam Syllabus Topics:

Apple App Development with Swift Certified User Sample Questions:

1. Review the code:

Given a struct called Animal, what line of code should be added on line 5 in order to produce the output shown?

A) Text(animals[animal].name)
B) Text(Animal.name)
C) Text(animal.name)
D) Text(Animals[animal].name)

2. You need to create a Watchpoint in Xcode. In which order should you complete the actions? Move all the actions to the answer area and place them in the correct order.

3. What is the code snippet an example of?

A) Implicitly unwrapped optional
B) Optional binding
C) Force unwrapping
D) Optional chaining

4. Review the code.
struct ContentView: View {
let fruits = [ " Apple " , " Banana " , " Kiwi " ]
var body: some View {
List(fruits, id: \.self) { fruit in
Text(fruit)
.font(.headline)
.padding()
}
}
}
Which of the following statements is true about the code?

A) The List view is using the fruits array to display the contents as individual rows.
B) The id: \.self in the List view is not necessary and may be omitted.
C) KeyPaths are used here to extract the font and padding properties dynamically.
D) The id: \.self in the List view should be rewritten as id: /self

5. Which property wrapper allows you to read data from the system or device settings?

A) @Binding
B) @Environment
C) @StateObject
D) @State

Solutions: