[Solved] Given this code snippet, what will be printed when the button is tapped once? class Counter:... Given this code snippet, what will be printed when the button is tapped once? | iOS Swift

iOS Swift - State Management in SwiftUI

Given this code snippet, what will be printed when the button is tapped once?

class Counter: ObservableObject {
  @Published var count = 0
}

struct ContentView: View {
  @StateObject var counter = Counter()

  var body: some View {
    Button("Tap") {
      counter.count += 1
      print(counter.count)
    }
  }
}

A1

BButton tapped

C0

DCompilation error

Step-by-Step Solution

Solution:

Step 1: Understand initial value and increment
The count starts at 0 and increments by 1 when the button is tapped.
Step 2: Check print output after increment
After increment, count is 1, so print outputs 1.
Final Answer:
1 -> Option A
Quick Check:
Increment then print = 1 [OK]

Quick Trick: Increment before print means output is 1 [OK]

Common Mistakes:

Printing before increment
Confusing initial value with updated value
Assuming compilation error due to ObservableObject

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Given this code snippet, what will be printed when the button is tapped once?

Step 1: Understand initial value and increment

Step 2: Check print output after increment

Final Answer:

Quick Check:

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