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Apple App Development with Swift Certified User Sample Questions:

1. For each statement about Navigation in SwiftUI. select True or False.

2. Review the code snippet.

The code snippet does not compile.
Which two actions will fix the errors? (Choose 2.)

A) Chang the type of unitPrice from Double to Int.
B) Change shipping from let to var to make it mutable.
C) Change the type of quantity from int to Double .
D) Change totalCost from let to var to make it mutable.
E) Change the initial value of totalCost from o to 0.0.

3. Review the code snippet.

The " faces " dictionary contains emojis and their descriptions.
Which code will create an array named " emo)is " that will copy all the emojis from the " faces " dictionary?

A) let emojis - Array(faces.values)
B) let emojis = Array(faces.keys)
C) let emojis - List(faces.koys())
D) let emojis List(faces.values())

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

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

5. Complete the code that conforms to the View protocol by selecting the correct option from each drop-down list.
Note: You will receive partial credit for each correct answer.

Solutions: