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(.module:
[lux #*
[abstract
["." equivalence (#+ Equivalence)]]
[data
[format
["." binary (#+ Format)]]]
[type
abstract]]
["." // #_
[encoding
["#." unsigned (#+ U2)]]])
(abstract: #export (Index kind)
{}
U2
(def: #export index
(All [kind] (-> U2 (Index kind)))
(|>> :abstraction))
(def: #export number
(-> (Index Any) U2)
(|>> :representation))
(def: #export equivalence
(All [kind] (Equivalence (Index kind)))
(:: equivalence.contravariant map-1
..number
//unsigned.equivalence))
(def: #export format
(All [kind] (Format (Index kind)))
(binary.adapt ..index
..number
//unsigned.u2-format))
)
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