Unless I'm mistaken, foldl' (the strict version of foldl) doesn't appear in (the export list of) the standard prelude or the list library. Is there a good reason for this? New users quite quickly find that they need it. J=F3n -- = J=F3n Fairbairn Jon.Fairbairn@cl.cam.ac.u= k 31 Chalmers Road jf@cl.cam.ac.uk Cambridge CB1 3SZ +44 1223 570179 (after 14:00 only, please!)