Using higher order functions should be enough, I think?

I personnaly use this one when opening files (input in that case):

type 'a res = Ok of 'a | Error of exn
let safe_open_in f file =
try
let ic = open_in file in
let r = try Ok (f ic) with e -> Error e in
close_in ic;
r
with e -> Error e

2015-08-06 11:40 GMT+02:00 Goswin von Brederlow <goswin-v-b@web.de>:

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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