Bernd Schmitt  <Bernd.Schmitt.News@gmx.net> wrote:
+---------------
| Pascal Costanza wrote:
| > However, mapcan is somewhat old-fashioned. It's especially odd that the 
| > filtering function has to return the elements wrapped in lists.
| > It's clearer (IMHO) to use, for example, the LOOP macro instead:
| > (loop for x in '(a 2 b c 3 4 d 5)
| >       when (numberp x)
| >       collect x)
| 
| Ok. Loop is 90 pages away ...
+---------------

O.k, try this then:   ;-}  ;-}

    > (remove-if-not #'numberp '(a 2 b c 3 4 d 5))

    (2 3 4 5)
    > 

+---------------
| But as i see in the index, there is no collect ...
+---------------

The COLLECT above is a "loop keyword". Don't worry about it until
you start studying LOOP for real...


-Rob

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Rob Warnock			<rpw3@rpw3.org>
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