On Wed, May 12, 2004 at 01:33:40AM +0100, Jorge Adriano Aires wrote:
This higher order function seems quite useful to me and not trivial, so I expected it to be available. When this happens I wonder if I'm missing something. Am I complicating things? Is it actually available (or some other that does the trick) ? Or is it just me who finds this usefull enough to be in the libs?
I've used such a function at least once, in context of processing program options (search for foldl in http://www.haskell.org/pipermail/haskell/2004-January/013412.html). So, yes, it is useful, but should it be included in a standard Monad module? After all, this module contains mostly trivial functions ;) BTW. You can write this function using foldM: compM l a = foldM (#) a l where # is an often used reverse application operator: x # f = f x Best regards, Tom -- .signature: Too many levels of symbolic links