Re: [Request] seq-map and mapcar with arbitrary number of sequences

["John Wiegley" <johnw@newartisans.com>]

>>>>>   <bruce.connor.am@gmail.com> writes:

> Furthermore, if anyone feels up to the task, I think it would make sense for
> the builtin mapc and mapcar too.

Those two functions are used in a large number of places. Adding support for a
"&rest seqs" argument rather than "seq" could impact performance, as it now
has to walk a one-element seqs to get the seq it had directly before. I
believe it would add another cons cell to the memory footprint, to package the
argument?

I'm fine with low-level functions preferring simplicity, since we have cl-lib
to provide higher-level versions that does not.

John