How to implement a universal enumerable type with generics in a programming language?

In Swift, you can create a generic enumerated type using generics so that the enumeration can work with different data types.

An example of a generic enumeration that stores either a value or an error:

enum Result<T> {
    case success(T)
    case failure(Error)
}

// Usage:
let successResult = Result.success("Data loaded")
let failureResult = Result.failure(NSError(domain: "Error", code: 1, userInfo: nil))

This approach allows creating flexible and reusable enumerations that can work with any data types specified during use.