Fw: [Ocaml-lib-devel] Abstract IO

[Nicolas C. <war...@fr...>]

I'm forwarding this message to the extlib list.
I sent this one a couple of weeks ago but didn't get any answer, I'm not
sure that it reached the list back then.


> Hi list,
>
> I just took some time to write a little module for handling IO in an
> abstract way.
> Several times I hit into some things that I wanted to print either in a
> string or in a file, here is some beginning of answer to this problem.
>
> For efficiency reason each input/output have two ways of reading/writing
> data : for example a chanr nel input can write char by char or directly
> strings. it's then a (char,string) input. An ouput takes a third parameter
> which is the value returned by a call to close.
>
> Then you can do the following :
>
> let o = IO.output_string() in
> IO.printf o "hello world %c"  '!';
> let s = IO.close_out o in
> print_endline s
>
> which is equivalent to :
>
> let o = IO.output_channel stdout in
> IO.printf o "hello world %c" '!';
> IO.close_out o; // are you sure :-)
>
> Comments are of course welcome,
>
> Nicolas Cannasse
>