exception Choice_not_found of string Lazy.t
-let num_choices = ref []
let nnum_choices = ref []
-let add_num_choice choice = num_choices := choice :: !num_choices
let nadd_num_choice choice = nnum_choices := choice :: !nnum_choices
let has_description dsc = (fun x -> fst x = dsc)
-let lookup_num_choices () = !num_choices
-
-let lookup_num_by_dsc dsc =
- try
- List.find (has_description dsc) !num_choices
- with Not_found -> raise (Choice_not_found (lazy ("Num with dsc " ^ dsc)))
-
let nlookup_num_by_dsc dsc =
try
List.find (has_description dsc) !nnum_choices