Henning Thielemann wrote: > On Fri, 23 Mar 2007, Neil Mitchell wrote: > > >>> my_sqrt t = last (take 20 (iterate (\n -> n/2 + t/(2 * n)) t)) >>> > > http://darcs.haskell.org/htam/src/Numerics/ZeroFinder/Newton.hs > > with > inverse t (\x->(x^2,2*x)) t > > >> >> I don't know how to add it into the one liner though - although I >> suspect someone here will :) >> > > > http://darcs.haskell.org/htam/src/Numerics/Sequence.hs > > limitDifference :: (Real a) => a -> [a] -> a > limitDifference tol xs = > case dropWhile ((> tol) . abs . uncurry (-)) $ zip xs (tail xs) of > ((_,x):_) -> x > [] -> error "limitDifference: Finite sequence, but no element satisfies > abort criterion." > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe > > > as a fellow haskell newbie, i would like to take this opportunity to encourage library authors to submit their material to the haskell hackage.
the haskell infrastructure is rather big, complex and "organic". (see e.g. http://darcs.haskell.org/tmp/ for an example) it was only by chance that i ran across the (rather amazing) htam library a week ago or so. i hope you agree that these things should not be left to chance ;-) hoogle, google and hackage tend to be the first places where i look for fresh meat. i suppose this also applies to other haskell freshmen. cheers, v.
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