From: Anton Moscal <msk@post.tepkom.ru>
To: stephanh@win.tue.nl
Cc: caml-list@inria.fr
Subject: Re: Is this use of Object.magic safe?
Date: Wed, 15 Nov 2000 00:31:03 +0300 (MSK) [thread overview]
Message-ID: <Pine.LNX.4.21.0011150027330.32539-100000@kouzdra.glokaya> (raw)
In-Reply-To: <00111310044001.28230@pcrm>
On Mon, 13 Nov 2000, Stephan Houben wrote:
> I have three questions:
> 1. Is this safe w.r.t. the garbage collector? Or am I going to confuse the GC?
> 2. Can I safely marshall values?
> 3. Is it worth the trouble? Perhaps O'Caml already does something smart
> when a constructor of the form `Int of int' is encountered?
Answers for 1 & 2 is true,
for 3 - false: if you try to run the following program:
let _ = Printf.printf "%b\n"
(value_of_int 0 == value_of_allocated_value True)
you got "true" as the result.
The cause is the following: variant without arguments
represented in the same way with int's.
Correct solution will be:
type allocated_value =
Bool of bool
| String of string
| Array of value
Regards,
Anton Moscal
next prev parent reply other threads:[~2000-11-15 21:38 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-11-13 8:43 Stephan Houben
2000-11-14 21:31 ` Anton Moscal [this message]
2000-11-14 14:41 Damien Doligez
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