[Haskell-cafe] Order of Evaluation
prstanley at ntlworld.com
Fri May 9 13:52:55 EDT 2008
(take 4 . map (>0)) (f s t)
s = 2 : t
t = 3 : s
f = zipWith (-)
What would be the order of evaluation for the above code? How would I
illustrate the evaluation step-by-step?
I'm guessing that the code necessitates lazy evaluation and as such
it starts with take then it applies f which in turn applies s and t
and zipWith until the first element satisfies the predicate in map
and This is repeated 4 times
What does the list think?
P.S. I'm not done with induction. I'm just letting it rst for a bit.
More information about the Haskell-Cafe