1 files changed, 16 insertions, 0 deletions
diff --git a/ocaml/lib/year2025/day02/part02/id.mli b/ocaml/lib/year2025/day02/part02/id.mli
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+++ b/ocaml/lib/year2025/day02/part02/id.mli
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+module ID : sig
+  (** [t] is a ID within a range *)
+  type t
+
+  val create : int -> t
+  (** [create num] is an ID [t] *)
+
+  val incr : t -> t
+  (** [incr id] is the next [id] in the sequence *)
+
+  val to_string : t -> string
+  (** [to_string id] is an string representation of [id] *)
+
+  val pp : t -> string
+  (** [pp id] is a pretty string representing [id] *)
+end