This page is part of the web mail archives of SRFI 1 from before July 7th, 2015. The new archives for SRFI 1 contain all messages, not just those from before July 7th, 2015.
Noah- After some reflection back when all this discussion happened the first time around, I came to the conclusion that this whole notion of "number of elts" was not a good one. See, what is the difference between a "3-element" circular list (1 7 2 1 7 2 ...) and a "six element" circular list (1 7 2 1 7 2 ...) The difference comes when you start side-effecting the list or its elements. Barring side-effects, *you can't observe any differences*. So they are the same list, if you live in a pure-functional world. I'm not opposed to some sort of lower-level utility that exposes the underlying structure of the list, but we should keep the levels clear. So you would want to give such a utility a distinct name, like (circular-list-number-of-elements l) -> integer or (circular-list-number-of-pairs l) -> integer Note that I avoided the term "length" in the name. I also think it's probably not so useful as to warrant inclusion in a general list library. -Olin