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On Fri, 20 Nov 1998, Ian Bicking wrote: > I guess I don't see how this could be a win. You can destruct the > list, but the garbage collector still needs to dispose of all the > components anyway, right? well, guess what, I ran some tests and here's my *BIG WIN*: the non-destructive procedures seem to use about 5% less space than the destructive ones. OTOH, the destructive procedures are ~30% slower than their non-destructive counter-parts. I don't think that's a win in anyone's book :( After this little exercise, I suspect that the GC is a bit smarter than I thought. It must be. With the test I ran, my hypothesis was that the non-destructive guys would use at least 25% more space. Not even close. Jay Glascoe jglascoe@jay.giss.nasa.gov