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(.module:
[library
[lux "*"
[abstract
[equivalence {"+" [Equivalence]}]]
[control
["<>" parser
["<b>" binary {"+" [Parser]}]]]
[data
["[0]" product]
["[0]" name]
["[0]" text
["%" format {"+" [format]}]]
[format
["[0]" binary {"+" [Writer]}]]]
[math
[number
["[0]" nat]]]]]
[////
[version {"+" [Version]}]])
(type: .public Signature
(Record
[#name Name
#version Version]))
(def: .public equivalence
(Equivalence Signature)
(product.equivalence name.equivalence nat.equivalence))
(def: .public (description signature)
(-> Signature Text)
(format (%.name (value@ #name signature)) " " (%.nat (value@ #version signature))))
(def: .public writer
(Writer Signature)
(binary.and (binary.and binary.text binary.text)
binary.nat))
(def: .public parser
(Parser Signature)
(<>.and (<>.and <b>.text <b>.text)
<b>.nat))
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