> Once you've got anything you understand it reasonably deeply.
Have you taught anyone recently? Many students increasingly seem unable to generalise from examples. They clearly understand and can explain the example, but require them to use the principle set out in the example in a slightly different context and they just can't see it. Yes, the natural programmers can do it, but the people who are struggling just don't seem to be able to, even when they want to (and some of them really do want to). I have no idea what it is that is causing this problem. as to the i < N case, a more defensive test would be i >=0 && i < N - but nobody does that. I wonder why? L. ---------------------------------------------------------------------- PPIG Discuss List (discuss@ppig.org) Discuss admin: http://limitlessmail.net/mailman/listinfo/discuss Announce admin: http://limitlessmail.net/mailman/listinfo/announce PPIG Discuss archive: http://www.mail-archive.com/discuss%40ppig.org/