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Ocaml Examples
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| let f ?(x = Some("valeur par default")) () = | |
| match x with | |
| | Some (y) -> print_string y | |
| | None -> print_string "None" | |
| ;; | |
| (* val f : ?x:string option -> unit -> unit = <fun> *) | |
| f ();; | |
| (* valeur par default- : unit = () *) | |
| f ~x:None ();; | |
| (* None- : unit = () *) | |
| f ~x:(Some "ma valeur") ();; | |
| (* ma valeur- : unit = () *) |
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