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From: Gabriel Scherer <gabriel.scherer@gmail.com>
Date: Thu, 6 Aug 2015 11:48:59 +0200
Message-ID: <CAPFanBGFrwqKO=JVcBo8oJuG973YFU8yG_KLyqFVpNSYdaH5hA@mail.gmail.com>
To: Goswin von Brederlow <goswin-v-b@web.de>
Cc: caml users <caml-list@inria.fr>
Content-Type: text/plain; charset=UTF-8
Subject: Re: [Caml-list] Destructive use of file descriptors

Many libraries provide a with_file_{in,out} function capturing this
pattern, without need for specific language support.

  BatFile.with_file_out "foo" (fun fd ->
    print_endline str
  )

On Thu, Aug 6, 2015 at 11:40 AM, Goswin von Brederlow <goswin-v-b@web.de> wrote:
> Hi,
>
> in Python one can write:
>
>     with open("foo") as fd:
>         fd.write(str)
>
> This involves some language magic that will open the file for the
> duration of the block and close it at the end. The file descriptor is
> automatically closed at a know time and not leaked or left until the
> GC gets around to cleaning it up.
>
> Has anyone constructed something like that for ocaml? Maybe with a ppx
> extension?
>
> MfG
>         Goswin
>
> --
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