How to Use defer in Swift

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

func loadResource() {
    print("Open")
    defer {
        print("Close")
    }
    print("Use resource")
}

loadResource()

Notes

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