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; dicts
(func dict () (list))
(func dict? (in)
(empty?
(filter (lambda (x) (not (eq? x 2))) (map list-length in))))
(func has? (in :list key)
(not (empty?
(filter (lambda (x) (eq? (first x) key)) in))))
(func get (d :list key)
(first (rest (first
(filter (lambda (x) (eq? (first x) key)) d)))))
(func set (d :list key val)
(if (has? d key)
(map (lambda (x) (if (eq? key (first x)) (list (first x) val) x)) d)
(append d (list key val))))
(func keys (d :list) (map first d))
(func drop (d :list key)
(filter (lambda (x) (not (eq? (first x) key))) d))
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