Yes you're right I had brackets wrong (and the 'where' version is
easier to read), thanks.
I think the where style works best - or maybe flip and a dangling \x-
>.
I maybe slow but I'm learning.
N
On Jan 7, 7:21 pm, Daniel Fischer
wrote:
> On Friday 07 January 20
te:
> On Friday 07 January 2011 19:01:43, b1g3ar5 wrote:
>
>
>
>
>
>
>
>
>
> > Thanks for your reply but it doesn't quite solve the problem. This:
>
> > plist <- mapM (\x-> (panel nb [])) my_list
>
> > returns [Panel()] and works as you
a neat way of doing this.
N
On Jan 7, 4:21 pm, Daniel Fischer
wrote:
> On Friday 07 January 2011 17:09:11, b1g3ar5 wrote:
>
> > I've tried to solve this but I am failing.
>
> > I can do this:
>
> > p0<-panel nb []
> > e0<-textCtrl p [text:=my_list!!
I've tried to solve this but I am failing.
I can do this:
p0<-panel nb []
e0<-textCtrl p [text:=my_list!!0]
but I want to do this on all of my_list, so I tried:
let es = map (\x-> textCtrl (panel nb []) [text:=x]) my_list
Now, this won't work because the panel nb [] is IO (Panel()) and the
par
I have a list of people not on their own list.
I can't decide whether I should be on it or not.
On Oct 1, 6:38 pm, Daniel Peebles wrote:
> I try to keep my list up to date with new haskellers I find on twitter, and
> it should include everyone on the haskell wiki list. Yes, it contains me,
> to
. I don't think anybody likes this, but I think we're
> stuck with it for the foreseeable future.
>
>
>
> On Sat, Oct 31, 2009 at 7:31 PM, b1g3ar5 wrote:
> > I'm trying:
>
> > instance Num b => Num (a -> b) where
> > fromInteger = pure .
I'm trying:
instance Num b => Num (a -> b) where
fromInteger = pure . Prelude.fromInteger
negate = fmap Prelude.negate
(+) = liftA2 (Prelude.+)
(*) = liftA2 (Prelude.*)
abs = fmap Prelude.abs
signum = fmap Prelude.signum
but the compiler rejects it with:
src\Main.hs:24:9:
Could not deduce (S
I can't get the following to work in Leksah - but it works OK in GHC.
Can anyone spot the error?
I wondered if it was becasue the libraries loaded are different - but
I'm just a Haskell beginner ...
I have:
myGroupBy :: Int→ [a]→ [[a]]
myGroupBy = takeWhile not . null . (unfoldr (Just . (split
