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|
(* TEST *)
(**
Test the stream example .
*)
type stream = Stream of (int * stream Lazy.t)
;;
exception End_of_stream
;;
let make_stream_up_to n =
let rec loop i =
if i = n then Stream (i, lazy (raise End_of_stream))
else Stream (i, lazy (loop (i + 1)))
in loop 0
;;
let stream_get (Stream (x, s)) = (x, Lazy.force s)
;;
let rec iter_stream_match f s =
match stream_get s
with exception End_of_stream -> ()
| (x, s') ->
begin
f x;
iter_stream_match f s'
end
;;
let test_iter_stream =
let limit = 10000000 in
try
iter_stream_match ignore (make_stream_up_to limit);
print_endline "iter_stream with handler case (match) is tail recursive"
with Stack_overflow ->
assert false
;;
|
