Previous: Satisfying a One-Argument Test, Up: Satisfying a One-Argument Test



17.2.2.1 Examples of Satisfying a One-Argument Test
      (count-if #'zerop '(1 #C(0.0 0.0) 0 0.0d0 0.0s0 3)) =>  4
     
      (remove-if-not #'symbolp '(0 1 2 3 4 5 6 7 8 9 A B C D E F))
     =>  (A B C D E F)
      (remove-if (complement #'symbolp) '(0 1 2 3 4 5 6 7 8 9 A B C D E F))
     =>  (A B C D E F)
     
      (count-if #'zerop '("foo" "" "bar" "" "" "baz" "quux") :key #'length)
     =>  3