Code: Select all
(mapcan (lambda (x) (if (evenp x) '(even))) (list 1 2 3 4))
Why do I get such a behavior?
Apparently, this is related to the quote '(even).
If I replace it by (list 'even), I get the expected answer (EVEN EVEN).
As far as I understand from the spec, the mapcan call should be equivalent to
Code: Select all
(apply #'nconc (mapcar (lambda (x) (if (evenp x) '(even))) (list 1 2 3 4)))