[Haskell-cafe] instance Monad Either?

[Philip Weaver]

On Dec 20, 2007 1:35 PM, Eric <eeoam at ukfsn.org> wrote:

> According to this
> <
> http://www.randomhacks.net/articles/2007/03/10/haskell-8-ways-to-report-errors
> >
> Either is an instance of class Monad, but when I try to use the do
> notation I get a compiler error. What's going on?
>

It would help if you'd provide an example of how you're trying to use it and
what the error message is.  Thanks!

It's actually Either String, not Either, that can be an instance of Monad.
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