(= (slot
  (id Array)
  (id first)) (function n
  (if (id n)
    (slot
      (id self)
      (call
        (id slice)
        (float 0.000000) (id n))))
(else
    (slot
      (id self)
      (call
        (id at)
        (id n))))))
(= (slot
  (id Array)
  (id sum)) (function
  (slot
    (id self)
    (call
      (id reduce)
      (function sum n
        (+ (id sum) (id n)))))))
(= (slot
  (id Array)
  (id min)) (function
  (slot
    (id self)
    (call
      (id reduce)
      (function min n
        (if (< (id n) (id min))
          (id n))
        (id min))))))
(= (slot
  (id Array)
  (id max)) (function
  (slot
    (id self)
    (call
      (id reduce)
      (function max n
        (if (> (id n) (id max))
          (id n))
        (id max))))))