[Haskell-cafe] Re: How to combine Error and IO monads?

[Cat Dancer]

On 12/7/06, J. Garrett Morris <trevion at gmail.com> wrote:
>
> foo :: ErrorT String IO Int
>
> Since ErrorT String IO Int is not the same as IO, you can't use IO
> operations directly.  In this case, you want:
>
> <     a <- lift getLine
>
> You want:
>
> <     r <- runErrorT foo
>

Wow!  I found your help terrific!  Thank you!   Can I give you some money?