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Apple App-Development-with-Swift-Certified-User Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: View Building with SwiftUI | - Extract Subviews to simplify the structure of an overlarge View - Create a multi-view app with navigation Stacks, Links, and/or Sheets - Use List Views to iterate through collections - Create multiple Views to implement app logic - 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 |
| Topic 2: Swift Programming Language | - Use functions
- Declare and use basic Swift types
|
| Topic 3: Xcode Developer Tools | - Use debugging techniques including, but not limited to, breakpoints, watchpoints, and logging to resolve errors
|
Apple App Development with Swift Certified User Sample Questions:
Given the function, which two function calls are valid? (Choose 2.)
- A. let sum - rightSum(100, by: 30, and: 20)
- B. let sum r\ ght5um(100, by: 50)
- C. let sun = rightSum(numl: 100, num2: 50)
- D. let sum = rightSum(100, num2: SO, and: 20)
- E. let Sun - rightSum(numl: 100, by: SO, and: SO)
Correct Answer: A,B 🗳️
Explanation: Only visible for GuideTorrent members. You can sign-up / login (it's free).
Review the code.
Note: You might need to scroll to see the entire block of code.
A breakpoint is set on line 3. When the application is run. it will stop at line 3. You need to debug the code.
Drag each debugging control from the left to the correct instruction on the right. You will receive partial credit for each correct answer
Correct Answer:
Explanation:
This question belongs to Xcode Developer Tools , especially the objective on using debugging techniques including breakpoints and stepping controls .
When execution stops at a breakpoint on line 3, Step Over runs that line without entering into another function call, so it is the correct action for moving past line 3 while staying in the current function. Step Into is used when execution reaches line 4 and you want to enter the display(numbers) function, which takes you into the function body starting at line 8. Once inside that function, Step Out continues execution until the current function returns, which is exactly what "step out from line 8" means.
Deactivate breakpoints turns breakpoint handling off so the debugger no longer stops on active breakpoints.
Continue program execution resumes the app until the next breakpoint or until the program finishes.
So the correct control order is:
1 = Continue
2 = Deactivate breakpoints
3 = Step Over
4 = Step Into
5 = Step Out
Complete the code by selecting the correct option from each drop-down list to create the following screen.
Note: You will receive partial credit for each correct answer.
Correct Answer:
Which property wrapper allows you to read data from the system or device settings?
- A. @StateObject
- B. @Binding
- C. @Environment
- D. @State
Correct Answer: C 🗳️
Explanation: Only visible for GuideTorrent members. You can sign-up / login (it's free).
Review the code snippet and identify what happens when the program is executed.
- A. Only menu items including " Burger " . " Chicken " . " Pasta " . " Salad " are printed.
- B. Only menu items including " Burger " . " Chicken " . " Pasta " . " SaJad " . " Steak " are printed.
- C. Only menu items including " Pizza " . " Burger " , " Chicken " . " Pasta " . " Salad " are printed.
- D. The for loop prints all the menu items in the array.
Correct Answer: A 🗳️
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