What would the return statement look like for a return signature `Either<Error, Nothing>` ?

# arrow

[Kev]

What would the return statement look like for a return signature Either<Error, Nothing> ?

[Sam]

If you're asking what goes here, the answer is... nothing 😄

either<Error, Nothing> {
  // do stuff
  // what goes here?
}

The return type Nothing literally means that there is no possible return value. You can loop infinitely, or you can throw an exception, but you are not allowed to reach the end of the code block normally.

[Alejandro Serrano.Mena]

you would need to end with either a raise or an exception

[streetsofboston]

This type of return statement fits a polling loop quite well, that never returns (while (true) { ... }) and only throws/raises an error when something goes wrong.