Re: [Haskell-beginners] Fwd: tower hanoi problem

Nice! Just out of curiosity... I have no trouble accepting that the zipWith3 approach is more idiomatic, but it doesn't appear (to my eye) significantly shorter or significantly more obvious. So are the tradeoffs primarily cultural, or is there another issue that I'm missing? Thanks, -jn- On Sat, Feb 21, 2015 at 12:04 PM, Chaddaï Fouché wrote:

On Sat, Feb 21, 2015 at 4:50 PM, Joel Neely wrote:

...

smooth :: Fractional n => [n] -> [n] smooth (a:z@(b:c:_)) = (a + b + c) / 3 : smooth z smooth _ = []

In Haskell, I would write this with higher-order functions though :

smooth xs = zipWith3 (\a b c -> (a+b+c)/3) xs (drop 1 xs) (drop 2 xs)

-- Jedaï

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