How to Format Numbers

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 formatter = NumberFormatter()
formatter.numberStyle = .decimal
formatter.maximumFractionDigits = 2

let value = 12345.678
let text = formatter.string(from: NSNumber(value: value))
print(text ?? "")

Notes

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