Upgrade Ocamlformat version.

This helps indicate where we have reached in case of problems.

.ocamlformat

@@ -1 +1 @@
-version = 0.26.2
+version = 0.27.0

bin/day2401.ml

@@ -1,7 +1,7 @@
 (** [pair_nums_from_string s] takes a string of two numbers separated by
     whitespace and returns the pair of the numbers *)
 let pair_ints_of_string s =
-  match Aoc.ints_of_string s with
+  match Aoc.ints_of_string ~sep:" " s with
   | [ h; h' ] -> (h, h')
   | _ -> raise (Invalid_argument "pair_nums_from_string")
 

bin/day2405.ml

@@ -36,8 +36,8 @@ let rec is_page_order_valid m pages =
   match pages with h :: t -> impl h t && is_page_order_valid m t | [] -> true
 
 (** [parse_rules lst] parses the rules in the list [lst] stopping when
-    encountering an empty line.  Returns a pair [(rule_map, tail)]. 
+    encountering an empty line. Returns a pair [(rule_map, tail)]. [tail] starts
-    [tail] starts the line after the empty line. *)
+    the line after the empty line. *)
 let parse_rules =
   let m = Hashtbl.create 17 in
   let rec impl = function

lib/aoc.ml

@@ -12,7 +12,8 @@ let main prep parts =
     | [| _; fname |] ->
         let lines = prep fname in
         let do_part i (fmt, fn) =
-          Printf.printf "Part %d = %s\n" (i + 1) (fmt (fn lines))
+          Printf.printf "Part %d = %s\n" (i + 1) (fmt (fn lines));
+          flush stdout
         in
         List.iteri do_part parts;
         exit 0

lib/aoc.mli

@@ -6,13 +6,12 @@ val distance1 : int -> int -> int
 (** [distance1 a b] returns the absolute difference between [a] and [b]. *)
 
 val strings_of_file : string -> string list
-(** [strings_from_file fname] returns a list of strings from the file 
+(** [strings_from_file fname] returns a list of strings from the file [fname].
-    [fname].  Each string represents a line from the file. *)
+    Each string represents a line from the file. *)
 
 val main : (string -> 'a) -> (('b -> string) * ('a -> 'b)) list -> unit
-(** [main prep parts] executes an advent of code problem.  [prep fname] should
+(** [main prep parts] executes an advent of code problem. [prep fname] should be
-    be a function that returns the input from [fname].  Each elemet of
+    a function that returns the input from [fname]. Each elemet of [parts] is a
-    [parts] is a pair of functions.  The first converts the output to a string
+    pair of functions. The first converts the output to a string (for example
-    (for example [string_of_int]).  The second executes the given part.
+    [string_of_int]). The second executes the given part. Output is given as if
-    Output is given as if done by: 
+    done by: [print_string ( prep fname |> snd |> fst )] *)
-    [print_string ( prep fname |> snd |> fst )] *)