Error Rail

The error rail isn't great, people get confused and it doesn't really do what we want. and, etc, shouldn't go to the error rail

What if we replaced it by something from another language (eg Rust/coffeescript's ? or F#'s let! (which is bind).


In F#:

let! x = 5 / 6
let! y = x + 2
return y + 1

Desugars into

Bind(5 / 6, fun x ->
Bind(x + 2, fun y ->
(y + 1)

Perhaps that's a better approach. It would imply needing a Bindable Trait or similar. See