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Apple App-Development-with-Swift-Certified-User Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Swift Programming Fundamentals | 30% | - Control flow
|
| App Design and Best Practices | 15% | - Code organization
|
| Development Environment | 15% | - Debugging techniques
|
| SwiftUI Basics | 25% | - Views and controls
|
| Data Handling and Logic | 15% | - Basic data processing
|
Apple App Development with Swift Certified User Sample Questions:
Why does the initializer for the following struct need the keyword self?
- A. self is needed to distinguish between the property and the parameter with the same name.
- B. self is always needed when you are setting properties in an initializer.
- C. self is only needed when the property does not have a default value.
- D. self is used to indicate to the reader that the parameter is being referenced.
Correct Answer: A 🗳️
Explanation: Only visible for PassSureExam members. You can sign-up / login (it's free).
Review the code.
var capitalCities = [ " USA " : " Washington D.C. " , " Spain " : " Madrid " , " Peru " : " Lima " ] Which two statements add the capital city of " Italy " to the dictionary? (Choose 2.)
- A. capitalCities.append([ " Italy " : " Rome " ])
- B. capitalCities[ " Italy " ] = " Rome "
- C. capitalCities = capitalCities + [ " Italy " : " Rome " ]
- D. capitalCities[ " Rome " ] = " Italy "
- E. capitalCities.updateValue( " Rome " , forKey: " Italy " )
Correct Answer: B,E 🗳️
Explanation: Only visible for PassSureExam 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. The for loop prints all the menu items in the array.
- C. Only menu items including " Pizza " . " Burger " , " Chicken " . " Pasta " . " Salad " are printed.
- D. Only menu items including " Burger " . " Chicken " . " Pasta " . " SaJad " . " Steak " are printed.
Correct Answer: A 🗳️
Explanation: Only visible for PassSureExam members. You can sign-up / login (it's free).
When you press ' Show Button ' on your app. a modal View appears.
Complete the code by selecting the correct option from each drop-down list.
Note: You will receive partial credit for each correct answer.
Correct Answer:
Explanation:
This question belongs to View Building with SwiftUI , specifically the domain on creating a multi-view app with navigation stacks, links, and sheets .
To present a modal view in SwiftUI when a Boolean state changes, the correct modifier is .sheet . The matching sheet API for a Boolean binding is:
sheet(isPresented: $showInfo) {
// modal content
}
So the first blank must be .sheet , and the second blank must be (isPresented: .
The logic works like this:
* @State stores the local Boolean that controls presentation.
* Pressing the button calls showInfo.toggle(), changing the value from false to true.
* When that Boolean becomes true, the .sheet(isPresented:) modifier presents the modal view.
* When the modal is dismissed, SwiftUI updates the Boolean back as needed.
There is also a typing issue in the screenshot: the state variable appears as ShowInfo, while the button and binding use showInfo. Swift is case-sensitive, so those names must match. The corrected code should use the same identifier consistently, such as:
@State var showInfo = false
Therefore, the correct dropdown selections are:
sheet
(isPresented:
Review the code snippet.
What will print after the final line of code is executed?
Correct Answer:
Answer the question by typing in the box.
2
Explanation:
This question belongs to Swift Programming Language , specifically the objective on variable scope and shadowing .
The code first declares:
let even = 2
This creates a constant named even in the outer scope with the value 2.
Inside the for loop, the code declares another constant with the same name:
let even = num * 2
This inner even exists only inside the loop body. It shadows the outer even, which means that within the loop, the name even refers to the loop's local constant, not the original one. However, that inner constant goes out of scope at the end of each loop iteration.
After the loop finishes, the inner even no longer exists. So when the final line runs:
print(even)
Swift uses the original outer constant, which is still 2.
So the output is:
2
This question tests two important Swift concepts:
* Scope : where a variable or constant can be accessed
* Shadowing : when a local declaration temporarily hides another declaration with the same name Therefore, the correct answer is 2 .
Viewing page 1 out of 9 pages.
Viewing questions 1-5 out of 42 questions.
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