| fn | function that takes as many arguments as there are lists |
| lists | lists which elements are processed in parallel |
MAPCAR applies function FN to elements of lists with same index. Each application result is put into resulting list. Length of resulting list is the length of the shortest list argument. See MAPCAN.
(mapcar (lambda (x) (+ x 10)) '(1 2 3 4)) => (11 12 13 14)
(mapcar #'round '(1.3 2.7 3.4 4.5)) => (1 3 3 4)
(mapcar #'list '(123 symbol "string" 345) '(1 2 3)) => ((123 1) (SYMBOL 2) ("string" 3))
(mapcar #'* '(3 4 5) '(4 5 6)) => (12 20 30)