Library Coq.extraction.ExtrOcamlBasic
Extraction to Ocaml : use of basic Ocaml types
Extract Inductive bool => bool [ true false ].
Extract Inductive option => option [ Some None ].
Extract Inductive unit => unit [ "()" ].
Extract Inductive list => list [ "[]" "( :: )" ].
Extract Inductive prod => "( * )" [ "" ].
NB: The "" above is a hack, but produce nicer code than "(,)"
Mapping sumbool to bool and sumor to option is not always nicer,
but it helps when realizing stuff like lt_eq_lt_dec
Restore lazyness of andb, orb.
NB: without these Extract Constant, andb/orb would be inlined
by extraction in order to have lazyness, producing inelegant
(if ... then ... else false) and (if ... then true else ...).
Extract Inlined Constant andb => "(&&)".
Extract Inlined Constant orb => "(||)".