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3 min readMar 7, 2026
Swift

How to Use Result

Represent success or failure explicitly.

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

enum LoadError: Error { case failed }

func load() -> Result<String, LoadError> {
    return .success("OK")
}

switch load() {
case .success(let value):
    print(value)
case .failure(let error):
    print(error)
}

Notes

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