On 26 Jan 2005, at 16:39, Dmitri Pissarenko wrote:
Hello!
Hi Dmitri.
Have a browse around the haskell wiki! There's loads of interesting information and example code there...
add2Img summand1 summand2 = sum where sum = [ (x+y) | x <- summand1, y <- summand2 ]
[3.0,4.0,501.0,4.0,5.0,502.0,102.0,103.0,600.0]
instead of
[1, 2, 100].
[(x+y) | x <- summand1, y <- summand2] means *all* possible sums x+y with x taken from the first list and y from the second. This is the nature of list comprehensions.
You rather want 'zipWith'. Documentation at:
http://www.haskell.org/ghc/docs/latest/html/libraries/base/GHC.List.html
...along with lots of other funky list processing stuff.
Jules
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