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(.require
[library
[lux (.except)]]
[//
["[0]" order (.only Order)]])
(type .public (Enum e)
(Interface
(is (Order e) order)
(is (-> e e) succ)
(is (-> e e) pred)))
(def .public (range enum from to)
(All (_ a) (-> (Enum a) a a (List a)))
(let [(open "/#[0]") enum]
(loop (again [end to
output (`` (is (List (,, (type_of from)))
{.#End}))])
(cond (/#< end from)
(again (/#pred end) {.#Item end output})
(/#< from end)
(again (/#succ end) {.#Item end output})
... (= end from)
{.#Item end output}))))
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