From: "Daniel Bünzli" <daniel.buenzli@erratique.ch>
To: William <r.3@libertysurf.fr>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] ocaml 4.03 and warning 52 : argument of this constructor should not be matched against a constant pattern
Date: Wed, 27 Apr 2016 11:36:06 +0200 [thread overview]
Message-ID: <32C540F73D89478D9E6D2AF2599F639F@erratique.ch> (raw)
In-Reply-To: <572084CC.1080408@libertysurf.fr>
Le mercredi, 27 avril 2016 à 11:22, William a écrit :
> How are we supposed to handle this nicely with the standard library ? Is
> there a better approach to catch those exceptions ?
Capture them immediately around the function call that raises with a _ pattern.
For example:
match (try Some (List.hd lst) with Failure _ -> None) with
| None -> Printf.printf "empty list\n"
| Some hd -> …
That's the way these functions should have been defined in the first place.
Best,
Daniel
next prev parent reply other threads:[~2016-04-27 9:36 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-27 9:22 William
2016-04-27 9:28 ` David Allsopp
2016-04-27 9:36 ` Daniel Bünzli [this message]
2016-04-27 9:43 ` Jacques-Henri Jourdan
2016-04-27 9:51 ` Roberto Di Cosmo
2016-04-27 10:00 ` Daniel Bünzli
2016-04-27 10:04 ` Jacques-Henri Jourdan
2016-04-28 7:25 ` Goswin von Brederlow
2016-04-27 11:01 ` Gabriel Scherer
2016-04-27 17:17 ` Adrien Nader
2016-04-27 18:20 ` Gabriel Scherer
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