> If I break down the example I listed before, here are a few
> useful ways of applying it:
This is much easier to understand, thanks. However:
> ; this $@ produces elements for a sequential music list via map!. Each
> ; element is constructed from p, a list of pitches making up a chord,
> ; and from d, which is a list first containing a duration followed by
> ; _optional_ articulations, so $@d actually can return several tokens of
> ; _different_ type.
here I would still like to have an elementary example how mapping
works, something like
In general, mapping a procedure over lists create a new list, for
example
(map! + '(1 2 3) '(4 5 6)) => (5 7 9)
More details on various mapping functions and its constraints can be
found in
http://www.gnu.org/software/guile/manual/html_node/SRFI_002d1-Fold-and-Map.html#SRFI_002d1-Fold-and-Map
Werner
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