Re: [RFC] Some new vector procedures (vector-{memq, apply, to-string, ...})

[Paul Eggert]

> > sometimes I see the (memq elt <list
> > of constants>) and think that using a vector would be faster/better,
> > mainly since memq has to check for cycles.

> You mean 'member', right?  I don't think 'memq' checks for cycles.
No, (memq ELT LIST) checks for cycles in LIST, just as (member ELT LIST) does.

We could probably speed up the cycle checking somewhat, but that's a different 
topic.