- lseq-for-each proc lseq1 lseq2 ...procedure
The arguments to lseq-for-each are like the arguments to lseq-map, but lseq-for-each calls proc for its side effects rather than for its values. Unlike lseq-map, lseq-for-each is guaranteed to call proc on the elements of the lseqs in order from the first element(s) to the last, and the value returned by lseq-for-each is unspecified. If none of the lseqs are finite, lseq-for-each never returns.
(let ((v (make-vector 5))) (lseq-for-each (let ((count 0)) (lambda (i) (vector-set! v count (* i i)) (set! count (+ count 1)))) '(0 1 2 3 4)) v) ;=> (#0 1 2 3 4)