Question

06.what does the \!\ operator do in swift?

a. divides numbers

b. reverses a boolean condition

c. checks equality

d. combines strings

clear my choice

07.which type of syntax does swiftui use?

a. procedural

b. declarative

c. functional only

d. imperative

clear my choice

08.which apple framework preceded swiftui for ui development?

a. uikit

b. core data

c. core animation

Explanation:

In Swift, the "!" operator is the logical NOT operator which reverses a Boolean condition. SwiftUI uses a declarative syntax where you describe what the UI should look like instead of how to build it step - by - step. UIKit was the Apple framework used for UI development before SwiftUI was introduced.

Answer:

1. B. Reverses a Boolean condition
2. B. Declarative
3. A. UIKit