[alexandria-devel] EXTREMUM

[Nikodemus Siivola]

On 25 April 2012 12:15, Tobias C Rittweiler <tcr at freebits.de> wrote:

> The cl-utilities library contains one function which cannot be
> found in alexandria that necessity pops up every now and then:
>
>  Returning the maximum (or minimum) element in a sequence
>  with respect to an arbitrary calculation involving the elements.
>
> I.e.
>
>  (elt (sort (copy-sequence <SEQUENCE>) #'< :key <FUNCTION>) 0) ; or #'>
>
> except doing it more efficiently.
>
> CL-UTILITIES calls this function EXTREMUM. (It also provides a couple
> of more functions along the lines to cover some edge cases.)

Pushed a version. Can you verify that it is what you wanted, and
performs acceptably?

Cheers,

 -- Nikodemus