[GitHub] ianpartridge commented on issue #3: Initial Support for swift 4

[GitBox <gi...@apache.org>]

ianpartridge commented on issue #3: Initial Support for swift 4
URL: https://github.com/apache/incubator-openwhisk-runtime-swift/issues/3#issuecomment-342839494
 
 
   Could we use a `Result` type here?
   
   ```swift
   enum Result<T, E: Swift.Error> {
       case success(T)
       case failure(E)
   }
   
   enum OpenWhiskError: Swift.Error {
       case barf
       // etc
   }
   
   struct Employee: Codable {
       let id: Int
       let name: String
   }
   
   func main(input: Employee, respondWith: (Result<Employee, OpenWhiskError>) -> Void) -> Void {
       respondWith(.success(input))
   }
   ```

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