How to Use Sets

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

var tags: Set<String> = ["swift", "ios"]

if tags.contains("swift") {
    print("Swift tag found")
}

Notes

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