Re: [Haskell-cafe] cumulative sum

2006-10-02 Thread Matthias Fischmann
> try > scanl (+) 0 > for the cumulative sum and it is probably worth pointing out once more that (as i have learned only recently :-) Hoogle can help you even quicker than this list with questions like these: scanl is the fifth answer if you ask for a -> [a] -> [a]. also, the url is easy to re

Re: [Haskell-cafe] cumulative sum

2006-10-02 Thread Chad Scherrer
Tamas, try scanl (+) 0 for the cumulative sum From there the zipWith idea you mentioned seems like the way to go. -Chad Hi, I have two lists, p and lambda (both are finite). I would like to calculate 1) the cumulative sum of lambda, ie if lambda = [lambda1,lambda2,lambda3,...] then cs

Re: [Haskell-cafe] cumulative sum

2006-10-02 Thread Michael Shulman
On 10/2/06, Tamas K Papp <[EMAIL PROTECTED]> wrote: Hi, I have two lists, p and lambda (both are finite). I would like to calculate 1) the cumulative sum of lambda, ie if lambda = [lambda1,lambda2,lambda3,...] then csum lambda = [lambda1,lambda1+lambda2,lambda1+lambda2+lambda3,...] Try (s

[Haskell-cafe] cumulative sum

2006-10-02 Thread Tamas K Papp
Hi, I have two lists, p and lambda (both are finite). I would like to calculate 1) the cumulative sum of lambda, ie if lambda = [lambda1,lambda2,lambda3,...] then csum lambda = [lambda1,lambda1+lambda2,lambda1+lambda2+lambda3,...] 2) the cumulative sum of p*lambda (multiplication elementwise