RosettaCodeData/Task/File-input-output/Standard-ML/file-input-output-2.ml

16 lines
349 B
OCaml

fun copyFile from to =
let
val instream = BinIO.openIn from
val outstream = BinIO.openOut to
fun aux () =
let
val buf = BinIO.inputN(instream, 1024)
in
if Word8Vector.length buf = 0
then ()
else (BinIO.output (outstream, buf); aux ())
end
in
(aux (); BinIO.closeIn instream; BinIO.closeOut outstream)
end