From 0ce0e7980a7b2b94b646d063127f064290340cfa Mon Sep 17 00:00:00 2001 From: Siraaj Khandkar Date: Wed, 25 Sep 2013 22:55:32 -0400 Subject: [PATCH] Init and print a matrix of cells. --- polymorphic-life/001/src/polymorphic_life.ml | 36 +++++++++++++++++--- 1 file changed, 31 insertions(+), 5 deletions(-) diff --git a/polymorphic-life/001/src/polymorphic_life.ml b/polymorphic-life/001/src/polymorphic_life.ml index bc0685b..e25bbf6 100644 --- a/polymorphic-life/001/src/polymorphic_life.ml +++ b/polymorphic-life/001/src/polymorphic_life.ml @@ -13,6 +13,8 @@ module type MATRIX = sig val map : 'a t -> f:(row:int -> col:int -> data:'a -> 'b) -> 'b t val iter : 'a t -> f:(row:int -> col:int -> data:'a -> unit) -> unit + + val print : 'a t -> to_string:('a -> string) -> unit end module Matrix : MATRIX = struct @@ -30,6 +32,13 @@ module Matrix : MATRIX = struct ) ) + let print t ~to_string = + Array.iter t ~f:( + fun row -> + Array.iter row ~f:(fun x -> printf "%s" (to_string x)); + print_newline () + ) + let map t ~f = Array.mapi t ~f:( fun row cols -> @@ -50,6 +59,10 @@ end module type CELL = sig type t + val init : unit -> t + + val to_string : t -> string + val state : t -> int val react : t -> states:int list -> t @@ -59,10 +72,23 @@ end module Conway : CELL = struct type t = D | A - let state = function + let of_int = function + | 0 -> D + | 1 -> A + | _ -> assert false + + let to_int = function | D -> 0 | A -> 1 + let to_string = function + | D -> " " + | A -> "o" + + let init () = Random.int 2 |> of_int + + let state = to_int + let react t ~states = let live_neighbors = List.fold_left states ~init:0 ~f:(+) in match t with @@ -75,10 +101,10 @@ end let main rows cols () = - let pool = Matrix.create ~rows ~cols ~data:() in - Matrix.iter pool ~f:( - fun ~row ~col ~data:() -> printf "R: %d, K: %d\n" row col - ) + Random.self_init (); + let init ~row:_ ~col:_ ~data = Conway.init data in + let grid = Matrix.create ~rows ~cols ~data:() |> Matrix.map ~f:init in + Matrix.print grid ~to_string:Conway.to_string let spec = -- 2.20.1