On 10 December 2012 23:55, Simon Marlow <marlowsd at gmail.com> wrote:
>
> (I'd rather not use `either`, it's one of those functions whose type I
> always have to look up)
{-# LANGUAGE TypeSignatureRhymes #-}
either :~:
do something with the left
or something with the right
but either way give me
something of the same type
Conrad.