This quiz covers the functionality and applications of Swift property wrappers, emphasizing their role in the SwiftUI framework. These questions cover various property wrappers such as @State, @Binding, @Published, and @EnvironmentObject, exploring how they manage and synchronize state within a SwiftUI application
1.
What version of Swift introduced property wrappers?
2.
What is the main purpose of property wrappers in Swift?
3.
Which keyword is used to declare a property wrapper in Swift?
4.
What is the wrappedValue property in a Swift property wrapper?
5.
How is a property wrapper applied to a property in a class or structure?
6.
Which method is responsible for setting initial values in a property wrapper?
7.
Which of the following best describes the behavior of property wrappers in Swift?
8.
Why are structures preferred over classes for implementing property wrappers?
9.
What does the term 'wrappedValue' refer to in a property wrapper?
10.
Which statement is true about property wrappers in Swift?
11.
Why is it beneficial to extract behavior into property wrappers?
12.
What happens when a property wrapper is applied to a property with an initial value?
13.
Which of the following protocols is most relevant when creating a property wrapper that works with different types?
14.
Can property wrappers be used with non-computed properties?
15.
Which of the following is an example of using a property wrapper with a default value?
16.
What is the role of the init() method in a property wrapper?
17.
Why is using property wrappers in Swift considered more efficient than duplicating code?
18.
What is one of the main uses of property wrappers in SwiftUI?
19.
Which of the following describes a limitation of property wrappers?
20.
What happens if a property wrapper is used without specifying a wrapped value?
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