Sorry,

I do not understand what you are saying to me.

I know that init produces a Maybe [a] . That is why I did put a Just before it.
When I do init' (x:xs) = Maybe (x: (init' xs)) I see this message :

src/Main.hs@5:16-5:21

Not in scope: data constructor

Maybe

Brandon Allbery schreef op 12-5-2015 om 16:03:

On Tue, May 12, 2015 at 10:00 AM, Roelof Wobben <r.wobben@home.nl> wrote:

init' (x:xs) = Just (x: (init' xs))

Remember that your init' produces Maybe [a], not [a].

--

brandon s allbery kf8nh sine nomine associates

allbery.b@gmail.com ballbery@sinenomine.net

unix, openafs, kerberos, infrastructure, xmonad http://sinenomine.net
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