Either from exception

Question

Either from exception

rparree opened this issue 6 years ago · 7 comments

Hi,

Is there a way of creating an Either from an expression that might yield an exception? Or perhaps are there plans to add a Try (with a toEither)? If there's demand for that (either a method like below or a full Try type), i could look into that and send a pull request.

function fromTry(fn){
    try{
        return Either.right(fn())
    } catch(e) {
        return Either.left(e)
    }
}

Answer 1 · 2019-05-21T05:28:15.000Z

Yeah that would be awesome. I'm surprised I hadn't done that already. Let's start with your suggestion and then see whether a first class Try type makes sense.

Answer 2 · 2019-05-22T19:33:44.000Z

Ok i will do so this coming weekend.

Answer 3 · 2019-05-23T14:07:29.000Z

Just to make things consistent with other stuff here, let's make it Either.fromTry(…) ;)

Answer 4 · 2019-05-23T14:16:20.000Z

Also some work (alias attempt) is already started #189

(but seems to be abandoned)

Answer 5 · 2019-06-03T14:19:42.000Z

snapshot released as monet@0.9.0-422

Answer 6 · 2020-01-14T11:01:40.000Z

How about this? Can we merge it and release 0.9.1?

Answer 7 · 2020-01-14T11:17:00.000Z

@wookieb it's merged wil be released with 0.9.1