]> Chris Hecker wrote: > > Is there any way to do something similar to the C++ string stream > stuff, where you treat strings (or Buffer.t's) as in_ or > out_channels? The Format module has a formatter for strings, but > there doesn't seem to be a way to do it with Pervasives. Something like: > > val out_channel_of_buffer : Buffer.t -> out_channel > val in_channel_of_buffer : Buffer.t -> in_channel > > and maybe _of_string versions too (probably necessary because you > can't convert a string to a buffer for the in_channel), which fill up > and don't expand. > > It'd be very useful to be able to do this. For reading, this might do what you want: (* wrap a Buffer with a Stream, for reading *) let stream_of_buffer buf = Stream.of_string(Buffer.contents buf) ;; For writing, I guess this sort of thing would do it: module Ostream : sig type t = char -> unit val of_buffer : Buffer.t -> t val of_string : string -> t val of_out_channel : out_channel -> t val output_string : t -> string -> unit val output_value : t -> 'a -> unit end = struct type t = char -> unit let of_buffer (buf:Buffer.t) : t = fun (c:char) -> Buffer.add_char buf c let of_string (s:string) : t = let i = ref 0 in fun (c:char) -> s.[!i] <- c let of_out_channel (chan:out_channel) : t = fun (c:char) -> output_char chan c let output_string (ostream:t) (str:string) = String.iter ostream str let output_value (ostream:t) thing = let str = Marshal.to_string thing [] in output_string ostream str end Maybe it would be prettier to make a matching Istream module, but I guess it's better to stay with the well-established Stream module. Issac > > > Thanks, > Chris > > PS. Please cc me on replies, I temporarily unsubscribed from the > list, thanks! > > ------------------- > To unsubscribe, mail caml-list-request@inria.fr Archives: > http://caml.inria.fr > Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: > http://caml.inria.fr/FAQ/ > Beginner's list: http://groups.yahoo.com/group/ocaml_beginners > > ------------------- To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/ Beginner's list: http://groups.yahoo.com/group/ocaml_beginners