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From: Pierre Weis <pierre.weis@inria.fr>
Message-Id: <200309300845.KAA01493@pauillac.inria.fr>
Subject: Re: [Caml-list] Printf question
In-Reply-To: <20030930080357.GA15744@redhat.com> from Richard Jones at "Sep 30, 103 09:03:57 am"
To: rich@annexia.org (Richard Jones)
Date: Tue, 30 Sep 2003 10:45:13 +0200 (MET DST)
Cc: caml-list@inria.fr
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> On Tue, Sep 30, 2003 at 12:36:59AM +0200, Pierre Weis wrote:
> > What do you mean by ``not type safe at all'' ?
> 
> Well it's not a bug in the compiler.
> 
> Here's an example which isn't type safe:
> 
> let sth = dbh#prepare "select name from employees where id = %a" in
> sth#execute string_conversion "foo";
> 
> To avoid going over the same ground again, here's my original posting
> in this thread:
> 
> http://caml.inria.fr/archives/200309/msg00294.html
> 
> Rich.

I'm sorry to confess I do not understand the example. BTW my fresh Caml
compiler has the same problem :(

        Objective Caml version 3.07

# let sth = dbh#prepare "select name from employees where id = %a" in
  sth#execute string_conversion "foo";
  ;;
Unbound value dbh

Could you give us a self contained example that would run into the
current version and exhibit the ``isn't type safe'' property ?

(To me a type safety problem is of prime importance, and I would fill
better when I understand yours :)

Pierre Weis

INRIA, Projet Cristal, Pierre.Weis@inria.fr, http://pauillac.inria.fr/~weis/


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