Tony Morris

Used it with Maybe yet? Here's a puzzle: used it with Either? Why not?

Well, the whole story was about my discovering <|> as a replacement for my own Maybe-only impl I haven't used it with Either, but surely will after last night

There is no Alternative for Either because there is no empty. Have a look at Data.Functor.Alt.

He's being sincere. It is a good exercise to learn about Alt and ponder why Either has Alt but not Alternative. Here's the link for Alt http://hackage.haskell.org/package/semigroupoids-5.3.1/docs/Data-Functor-Alt.html …

Ok, thanks for the link. I guess I'm not generally receptive to socratic methods in this context

I have no idea what is happening.

I didn't realize you were actually posing a puzzle in your first response once I did (upon your 2nd reply), I felt like I walked into a "gotcha" moment, thus the emoji and gif unlike some (most?) other math/eng folk, I actually don't like things cast as puzzles/riddles‍