[Maxima] More on memq
toy.raymond at gmail.com
Sat Apr 12 13:54:58 CDT 2008
Robert Dodier wrote:
> On 4/12/08, Richard Fateman <fateman at cs.berkeley.edu> wrote:
>> If you replace memq by the appropriate macro expansion, my guess is it would
>> be FASTER than member by the same or a larger factor.
> A much better reason for replacing archaisms with CL is that
> outsiders (i.e., anyone who has spent less than a couple of
> years on the project) will understand the code better.
> Execution time does matter but it is a secondary or tertiary
> consideration in this case.
You keep saying this, Robert, by why don't you encourage people to make
truly substantive changes like adding comments to the code?
Anyone with a passing knowledge of Lisp would be able to figure out in a
minute with a little grepping that memq is just member with a test of
eq. And if they can't, do you really want them hacking on the code? :-)
Some of the other changes, like those old ((lambda (a b c) ...) 1 2 3)
things should go, but the changes should be done all at once everywhere,
so we can have a nice clean checkin. Just like when the code was
converted to lower-case and indented, or when the case-sensitive feature
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