SE-0215 - Conform Never to Equatable and Hashable

Evolution Proposal Reviews
42

Using an extension of @Chris_Lattner3 's proposal for dynamicCallable SE-0216: User-defined dynamically callable types - #68 by dan-zheng (current proposal doesn't handles static or init), you could make Never conform to all types. For all static and init functions it dispatches to the dynamicallyCallStaticMethod method that throws a fatal error. EG:

@dynamicCallable
struct Never {
  // Catches all `static` and `init` calls.
  @discardableResult
  func dynamicallyCallStaticMethod(withName: String, withArguments: [Any]) -> Never {
    fatalError("`static` function or `init` called on `Never`!")
  }
}