From: billwolf@hubcap.clemson.edu (William Thomas Wolfe,2847,)
Subject: Re: Overloading of ":="
Date: 25 Dec 88 19:27:52 GMT [thread overview]
Message-ID: <3976@hubcap.UUCP> (raw)
In-Reply-To: 4189@enea.se
From article <4189@enea.se>, by sommar@enea.se (Erland Sommarskog):
> [Mats Weber and Erland Sommarskog rehash the argument about
> assignment procedures having an "in out" parameter for the destination]
>
> Now, WHY, is A of mode "in out" in the Assign procedure? If we had
> "out" only, nothing "erroneous" could occur.
Because the ASSIGN procedure needs to be able to DESTROY the old
value; DESTROY procedures must read objects during the process
of destroying them. Please review the recent discussion rather
than recreating it, unless there are new issues to be considered.
next prev parent reply other threads:[~1988-12-25 19:27 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
1988-12-24 22:02 Overloading of ":=" Erland Sommarskog
1988-12-25 19:27 ` William Thomas Wolfe,2847, [this message]
-- strict thread matches above, loose matches on Subject: below --
1988-12-26 13:07 Erland Sommarskog
1988-12-20 13:05 Mats Weber
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