How to use Result when success don’t have value?

Question

I have a Result, success don't have value.

typealias MyResult = Result<Void, Error>

Use

let myResult: MyResult = .success(())

Is it possible like this?

let myResult: MyResult = .success()

I try to change define MyResult, but not correctly :(

typealias MyResult = Result<_, Error>   //Expected type
typealias MyResult = Result<nil, Error> //Expected type

Is there any other way to define this Result?

Answer 1

Use Error? as your result type.

typealias MyResult = Error?

extension MyResult {

    var isSucceeded: Bool { return self == .none } 
}