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From: | Clément Pit-Claudel |
Subject: | Re: [PATCH] Add new lisp function length= with bytecode support |
Date: | Mon, 6 Mar 2017 15:45:32 -0500 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.7.0 |
On 2017-03-06 15:36, Gdobbins wrote: >> Why add length= as a primitive? Why is it important enough to >> justify that? > > … I don't really see a purpose in using nthcdr like you have in a > lisp implementation of length=, it isn't any better than just using > length directly since it requires just as much linked list traversal. Isn't Richard's code much faster for long lists and small Ns thank taking the length of the list? Clément.
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