At Mon, 12 Mar 2007 11:24:48 +0100,
Maxime Henrion wrote:
> pmaybe :: GenParser tok st a -> GenParser tok st (Maybe a)
> pmaybe p = option Nothing (p >>= return . Just)
>
> I've been using it happily with some code of mine. Do people think
> that it would be generally useful to have in Parsec?
On Mon, Mar 12, 2007 at 11:24:48AM +0100, Maxime Henrion wrote:
> While using the very nice "option" combinator of Parsec recently, it
> seemed to me that it would be useful to have a more specific kind of
> combinator for optional tokens that wraps the token into a Maybe type.
>
> So, that gives:
Hello all,
While using the very nice "option" combinator of Parsec recently, it
seemed to me that it would be useful to have a more specific kind of
combinator for optional tokens that wraps the token into a Maybe type.
So, that gives:
pmaybe :: GenParser tok st a -> GenParser tok st (M
