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Apple App-Development-with-Swift-Certified-User Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Swift Programming Language | - Demonstrate proper use of structs, classes
|
| Xcode Developer Tools | - Identify and use the features of the Xcode interface
|
| View Building with SwiftUI | - Create multiple Views to implement app logic - Extract Subviews to simplify the structure of an overlarge View - Use List Views to iterate through collections - Use @State, @Binding, @Environment, and/or Observable to share data between Views - Position and/or layout a single SwiftUI View with standard Views and modifiers - Create a multi-view app with navigation Stacks, Links, and/or Sheets |
Apple App Development with Swift Certified User Sample Questions:
Which property wrapper allows you to read data from the system or device settings?
- A. @Environment
- B. @Binding
- C. @State
- D. @StateObject
Explanation: Only visible for Pass4suresVCE members. You can sign-up / login (it's free).
Review the code snippet and identify what happens when the program is executed.
- A. The for loop prints all the menu items in the array.
- B. Only menu items including " Burger " . " Chicken " . " Pasta " . " Salad " are printed.
- C. Only menu items including " Pizza " . " Burger " , " Chicken " . " Pasta " . " Salad " are printed.
- D. Only menu items including " Burger " . " Chicken " . " Pasta " . " SaJad " . " Steak " are printed.
Explanation: Only visible for Pass4suresVCE members. You can sign-up / login (it's free).
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.
Explanation:
This question belongs to View Building with SwiftUI , especially the domain covering positioning and/or layout a single SwiftUI View with standard Views and modifiers and the foundational structure of a SwiftUI view. In SwiftUI, a custom screen is typically declared as a struct that conforms to the View protocol. Apple's SwiftUI documentation shows the standard pattern:
struct ScreenView: View {
var body: some View {
Text( " Hello " )
}
}
Here, struct is required because SwiftUI views are commonly defined as structures. View is required after the colon because the type must conform to the View protocol. body is the required computed property that returns the content of the view as some View. Apple documents that every conforming View type must provide a body property that describes its content.
So the completed code is:
import SwiftUI
struct ScreenView: View {
var body: some View {
Text( " Hello " )
}
}
This is the canonical SwiftUI view declaration pattern and is one of the most fundamental concepts in App Development with Swift.
Which code correctly creates a size 300 rectangular Image View with rounded corners that displays the entire image, regardless of size?
- A.
- B.
- C.
- D.
Explanation: Only visible for Pass4suresVCE members. You can sign-up / login (it's free).
Given the function, which two function calls are valid? (Choose 2.)
- A. let Sun - rightSum(numl: 100, by: SO, and: SO)
- B. let sum = rightSum(100, num2: SO, and: 20)
- C. let sun = rightSum(numl: 100, num2: 50)
- D. let sum - rightSum(100, by: 30, and: 20)
- E. let sum r\ ght5um(100, by: 50)
Explanation: Only visible for Pass4suresVCE members. You can sign-up / login (it's free).
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