IT업계에 계속 종사하고 싶은 분이라면 자격증 취득은 필수입니다. Apple App-Development-with-Swift-Certified-User시험은 인기 자격증을 필수 시험과목인데Apple App-Development-with-Swift-Certified-User시험부터 자격증취득에 도전해보지 않으실래요? Apple App-Development-with-Swift-Certified-User덤프는 이 시험에 대비한 가장 적합한 자료로서 자격증을 제일 빠르게 간편하게 취득할수 있는 지름길입니다. 구매전 덤프구매사이트에서 DEMO부터 다운받아 덤프의 일부분 문제를 체험해보세요.
| Section | Objectives |
|---|---|
| Xcode Developer Tools | - Use debugging techniques including, but not limited to, breakpoints, watchpoints, and logging to resolve errors
|
| Swift Programming Language | - Demonstrate the use of Optional types
- Use functions
|
| View Building with SwiftUI | - Extract Subviews to simplify the structure of an overlarge View - Create multiple Views to implement app logic - Position and/or layout a single SwiftUI View with standard Views and modifiers - Use List Views to iterate through collections - Use @State, @Binding, @Environment, and/or Observable to share data between Views - Create a multi-view app with navigation Stacks, Links, and/or Sheets |
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질문 # 40
Review the code.
You need to add the word " Great! " to the Capsule shape.
Complete the code by typing in the boxes.
정답：
설명：
overlay, Text
Explanation:
This question belongs to View Building with SwiftUI , particularly the domain involving positioning and/or laying out a single SwiftUI view with standard views and modifiers . To place text on top of a shape such as a Capsule, SwiftUI uses the overlay modifier. Apple documents overlay as a view modifier that layers one view in front of another, which is exactly what is needed here: the text should appear on top of the blue capsule rather than beside or below it. The second blank must therefore be Text , because SwiftUI uses a Text view to display string content like " Great! " .
The completed code is:
struct ContentView: View {
var body: some View {
Capsule()
.fill(.blue)
.frame(width: 200.0, height: 100.0)
.overlay(
Text( " Great! " )
.font(.largeTitle)
)
}
}
This works because Capsule() creates the shape, .fill(.blue) gives it the blue color, .frame(width:height:) sets its size, and .overlay(...) places the Text( " Great! " ) directly above that shape. This is a standard SwiftUI composition pattern: build a base view, then apply modifiers to style it and layer additional content. In App Development with Swift objectives, this aligns with understanding standard views, modifiers, and layout techniques in SwiftUI.
질문 # 41
Review the code snippet.
What is the value of answer after you run the code?
정답：
설명：
4
Explanation:
This question belongs to Swift Programming Language , specifically the domains covering control flow , loops , and range operators .
The code starts with:
var count = 0
var answer = 0
So both variables begin with the value 0.
In the first loop:
for index in 1...5 {
count = index
}
the closed range 1...5 includes 1, 2, 3, 4, and 5 . During each iteration, count is updated to the current value of index. After the loop finishes, the final value assigned to count is 5 .
Then the second loop runs:
for index in 1.. < count {
answer = index
}
Here, the half-open range 1.. < count means values starting at 1 up to, but not including , count. Since count is 5, this loop runs with index equal to 1, 2, 3, and 4 . Each time through the loop, answer is updated to the current index. After the last iteration, answer becomes 4 .
So the final value of answer is 4 . This question tests understanding of the difference between the closed range operator ... and the half-open range operator .. < , which is a key Swift control-flow concept.
질문 # 42
Select the area in Xcode that allows you to display the Preview Canvas.
정답：
설명：
Explanation:
This question belongs to Xcode Developer Tools , specifically the objective domain on identifying and using the features of the Xcode interface . In the screenshot, the correct area is the upper-right corner of the editor toolbar , where Xcode provides the control for editor display options. Apple's documentation explains that to show previews, you can use the editor controls and specifically notes that you can click the Adjust Editor Options button and choose Preview , which displays the preview canvas to the right of the editor.
So, in hotspot terms, the correct selection is the editor options control near the top-right of the code editor
, not the Run button, not the Inspector, and not the Project navigator. This aligns with Apple's preview workflow for SwiftUI in Xcode, where the canvas is shown from the editor display controls. Apple also describes the preview canvas as part of Xcode's interface for quickly visualizing UI changes while editing code.
질문 # 43
Which property wrapper allows you to read data from the system or device settings?
정답：A
설명：
Comprehensive and Detailed Explanation From App Development with Swift domains:
This question belongs to View Building with SwiftUI , specifically the objective about using property wrappers such as @State, @Binding, and @Environment to manage and share data between views.
The correct answer is @Environment because it is used to read values provided by the system or the surrounding view environment. These values can include device-related or system-provided information such as size classes, color scheme, locale, and dismiss actions. In SwiftUI, @Environment gives a view access to contextual information that it does not own directly, but which is supplied by the framework or ancestor views.
The other options are not correct for this purpose:
* @State is used for local mutable state owned by the current view.
* @Binding is used to create a two-way connection to state owned elsewhere, usually in a parent view.
* @StateObject is used to create and own an observable reference-type object for the lifetime of the view.
So if you want a SwiftUI view to read data coming from system or device settings, the correct property wrapper is @Environment .
질문 # 44
Why does the initializer for the following struct need the keyword self?
정답：C
설명：
This question belongs to Swift Programming Language , specifically the objective covering structs, properties, and initializers .
In the struct, both the property and the initializer parameter are named age:
struct person {
var age: Int
init(age: Int) {
self.age = age
}
}
Here, age inside the initializer could refer to either the property of the struct or the parameter passed into the initializer. Swift uses self.age to clearly mean the property that belongs to the current instance , while plain age refers to the initializer parameter . So self.age = age means: assign the parameter value to the instance property.
That is why C is correct. The keyword self is required here to remove ambiguity between two identifiers with the same name.
The other options are incorrect:
* A is wrong because self here is not pointing to the parameter; it points to the instance property.
* B is wrong because self is not always required in every initializer assignment. It is specifically needed here because of the naming conflict.
* D is wrong because whether the property has a default value is not the reason self is needed in this example.
So the correct answer is C. self is needed to distinguish between the property and the parameter with the same name.
질문 # 45
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