for-each[procedure] for-each proc list1 list2 ...
R5RS: The arguments to for-each are like the arguments to map,
but for-each calls proc for its side effects rather than for its
values. Unlike map, for-each is guaranteed to call proc on the
elements of the lists in order from the first element(s) to the last,
and the value returned by for-each is unspecified.
SRFI-1 extends R5RS to allow the arguments to be of unequal length;
it terminates when the shortest list runs out.
R6RS: The implementation should check the lists have
the same length. It is a recommendation.
See also map, pair-for-each.
[generic] for-each proc coll1 coll2 ...
Gauche extends this to take arbitrary collections
(with gauche.collection module).
|