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From: David MENTRE <dmentre@linux-france.org>
To: Francois Berenger <berenger@riken.jp>
Cc: caml-list <caml-list@inria.fr>
Subject: Re: [Caml-list] some beautiful OCaml code
Date: Wed, 9 Jan 2013 09:38:51 +0100	[thread overview]
Message-ID: <CAC3Lx=bkQMo50rs=zjUpz==y_RzUffLCCDX5wcNK0Q=Mn_j5xQ@mail.gmail.com> (raw)
In-Reply-To: <50ECE88D.9000905@riken.jp>

Hello OCaml experts,

2013/1/9 Francois Berenger <berenger@riken.jp>:
> There is a full blog post about it there:
>
> http://functional-orbitz.blogspot.se/2013/01/introduction-to-resultt-vs-exceptions.html

Regarding this blog post, the final code is using Polymorphic Variants
(http://caml.inria.fr/pub/docs/manual-ocaml/manual006.html#toc36).
E.g.
"""
    | _ ->
      Error (`Bad_line s)
"""

I never fully grasped polymorphic variants compared to regular ones
but I always had the feeling the polymorphic variants where less safe
that variants because they would allow more possibility to mix
unrelated things[1].

Are the use of polymorphic variant mandatory to write code
Return-Value-style code or can regular variants be used?

Best regards,
david

[1] Of course this ability is the very thing that is of interest to
people using polymorphic variants.

  reply	other threads:[~2013-01-09  8:39 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-01-09  3:48 Francois Berenger
2013-01-09  8:38 ` David MENTRE [this message]
2013-01-09 10:06   ` Malcolm Matalka
2013-01-10  8:13     ` David MENTRE
2013-01-09 13:15   ` AW: " Gerd Stolpmann
2013-01-09 14:15   ` Kristopher Micinski

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