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Path: utzoo!linus!philabs!pwa-b!mmintl!franka
From: franka@mmintl.UUCP (Frank Adams)
Newsgroups: net.lang
Subject: Re: Multiple assignments
Message-ID: <1513@mmintl.UUCP>
Date: Thu, 29-May-86 12:14:38 EDT
Article-I.D.: mmintl.1513
Posted: Thu May 29 12:14:38 1986
Date-Received: Sun, 1-Jun-86 06:21:10 EDT
References: <1455@mmintl.UUCP> <825@bentley.UUCP> <2788@utcsri.UUCP>
Reply-To: franka@mmintl.UUCP (Frank Adams)
Organization: Multimate International, E. Hartford, CT
Lines: 21

In article <2788@utcsri.UUCP> greg@utcsri.UUCP (Gregory Smith) writes:
>I think he means:
>	procedure proc( var a : integer );
>	begin
>		a:= 0;
>	end;
>begin
>	proc( cc $ dd );	{ set cc and dd to 0 }
>
>I cannot agree with this - this is glorifying side-effects to a bizarre
>extent. The implementation is not straightforward, either. Besides, what
>if 'proc' looks at 'a' before using it?

This would be used in a language where parameters are declared as in, out,
or inout.  The $ operator would only be legal for an out parameter.

The implementation would be for the calling program to make the additional
assignment.

Frank Adams                           ihnp4!philabs!pwa-b!mmintl!franka
Multimate International    52 Oakland Ave North    E. Hartford, CT 06108