Helpful Result extension functions failed() and suceeded() which return an optional of either the failure error or success value

Result+succeeded.swift

extension Result {
    func failed(else handleSuccess: ((Success) -> Void)? = nil) -> Failure? {
        switch self {
        case .success(let value):
            handleSuccess?(value)
            return nil
        case .failure(let error):
            return error
        }
    }
    
    func succeeded(else handleFailure: ((Failure) -> Void)? = nil) -> Success? {
        switch self {
        case .success(let value):
            return value
        case .failure(let error):
            handleFailure?(error)
            return nil
        }
    }
}

// very useful if:
// - the success value is not wanted (perhaps its void?), only the error
// - or vice-versa you don't care what the error was (logged elsewhere?)

//  if let error = authorize().failed() {
//      print("Unable to get authorization, error: \(error)")
//  }
//  if let record = fetch().succeeded() {
//      process(record)
//  }

// - you store a result var then want to test error and value in separate if statements

//  let updateResult = ....
//  if let error = updateResult.failed() {
//      log("updateItem failed, error \(error)")
//  } else if let updatedEntity = updateResult.succeeded() {
//      replaceOriginal(updatedEntity)
//  }

// - seeking brevity at the sacrifice of simplicity, you want to unwrap a result within if or guard
//   statements that capture the success value, but still want to have some failure handling

//  if let loadedWidget = loadListToFindTestWidget().succeeded(else: { XCTFail("loadList failed, error \($0)") }) {
//      widget = loadedWidget
//  } else if let addedWidget = addTestWidget().succeeded(else: { XCTFail("addItem failed, error: \($0)") }) {
//      widget = addedWidget
//  } else {
//      return
//  }