Re: completing-read() on list of vectors

[Nikolaj Schumacher <me@nschum.de>]

Nordlöw <per.nordlow@gmail.com> wrote:

> I guess I need to give it an explicit completion function (as second
> argument) to achieve lookups of list of vectors where for example
> "accumulate" is used as key and the return value is the whole list
> element (vector).

The easiest way would be just to duplicate the first element in a cons.

(a . [a b c d])

Or use a hash map.

Certainly, you could also write your own completion functions, but it
will be significantly slower, because it's written in lisp.  (If speed
that's of any concern...)

> Why doesn't completing-read() already work on list of vectors where
> first vector element is a string aswell?

Unfortunately, there are few functions capable of working with vectors.
Consequently, They are rarely used.  (Consequently, there are few
functions capable of working with them.)


regards,
Nikolaj Schumacher