I found https://github.com/janestreet/custom_printf quite straightforward
to understand and easy to use, if most of your types already have sexp
converters and to_string functions.


On Tue, Jul 1, 2014 at 5:59 AM, Gabriel Kerneis <gabriel@kerneis.info>
wrote:

> Dear all,
>
> in CIL <http://cil.sf.net>, the module Pretty provides a Format-like
> interface with a few extensions compared to usual format strings.
> Implementation-wise, it uses string_of_format and re-implements most of
> the logic of the pre-4.02 Format module, with Obj.magic all over the
> place.
>
> I wondered if anyone has done something similar in their own project
> (extending Format in one way or another), and if the new GADT-based
> approach could provide a cleaner solution?
>
> One thing I quite like with the current code, despite its uglyness, is
> its concision. I am right in assuming that switching to GADTs would
> require a lot more boilerplate?
>
> Many thanks for any example you could provide.
>
> With best regards,
> --
> Gabriel
>
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