How to Use Property Observers

Steps

1. Paste the code into a Swift file or playground.
2. Run it once to verify the output.
3. Adjust the inputs to match your use case.

Copy and paste

import Foundation

struct Counter {
    var value: Int = 0 {
        didSet {
            print("Value changed to (value)")
        }
    }
}

var counter = Counter()
counter.value = 2

Notes

• Keep functions small and focused for reuse.
• Prefer safe APIs like optionals and guards.