How to Match with Regex

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

let text = "Order #1234"
let regex = /#(d+)/

if let match = text.firstMatch(of: regex) {
    print(match.1)
}

Notes

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