Bird
0
0

Which of the following SwiftUI Stepper initializations correctly binds to a variable count and displays its value?

easy📝 Syntax Q3 of 15
iOS Swift - User Input and Forms
Which of the following SwiftUI Stepper initializations correctly binds to a variable count and displays its value?
AStepper(value: $count) { Text("Count: \(count)") }
BStepper(value: count) { Text("Count: \(count)") }
CStepper("Count: \(count)", value: $count)
DStepper("Count", value: count)
Step-by-Step Solution
Solution:
  1. Step 1: Understand Binding

    The Stepper requires a binding to a mutable variable, so the value parameter must be passed as $count.
  2. Step 2: Correct Syntax

    The closure syntax { Text("Count: \(count)") } is used to display the current count.
  3. Final Answer:

    Stepper(value: $count) { Text("Count: \(count)") } -> Option A
  4. Quick Check:

    Binding uses $ prefix [OK]
Quick Trick: Use $ to bind state variables in Stepper [OK]
Common Mistakes:
  • Passing value without $ binding
  • Using incorrect initializer syntax
  • Not providing a label or closure

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More iOS Swift Quizzes