(defknown %map-to-nil-on-vector (callable vector) null (flushable call))
(defknown %map-to-nil-on-sequence (callable sequence) null (flushable call))
(defknown %map-to-nil-on-vector (callable vector) null (flushable call))
(defknown %map-to-nil-on-sequence (callable sequence) null (flushable call))
;;; returns the result from the predicate...
(defknown some (callable sequence &rest sequence) t
(foldable unsafely-flushable call))
;;; returns the result from the predicate...
(defknown some (callable sequence &rest sequence) t
(foldable unsafely-flushable call))