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(.module:
[lux #*
[abstract
[monad (#+ do)]]
[data
["." identity (#+ Identity)]]
[math
["." random]
[number
["n" nat]]]
["_" test (#+ Test)]]
{1
["." /]})
(def: #export test
Test
(do random.monad
[sample random.nat]
(<| (_.covering /._)
($_ _.and
(_.cover [/.be]
(n.= (inc sample)
(: (Identity Nat)
(/.be identity.comonad
[value (unwrap sample)]
(unwrap (inc value))))))
))))
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