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From: bing@galbp.UUCP (Bing Bang)
Newsgroups: net.lang.c++
Subject: Re: Wish List
Message-ID: <307@galbp.UUCP>
Date: Wed, 26-Mar-86 09:14:42 EST
Article-I.D.: galbp.307
Posted: Wed Mar 26 09:14:42 1986
Date-Received: Sat, 29-Mar-86 01:13:35 EST
References: <429@batcomputer.TN.CORNELL.EDU> <>
Reply-To: bing@galbp.UUCP (Bing Bang)
Organization: Lanier Business Products, Inc., Atlanta, Georgia
Lines: 29
Summary: 

In article <> kwh@bentley.UUCP writes:
>In article <429@batcomputer.TN.CORNELL.EDU> garry@batcomputer.TN.CORNELL.EDU
>(Garry Wiegand) proposed a new syntax:
>>	foo = ~foo;   -->   ~~foo; /* Means: please bitwise-complement foo */
>>	foo = !foo;   -->   !!foo; /* Means: please logically-complement foo */
>>
>>Of course, screwily written (macros without proper parenthesizing, for
>>example) existing programs would break.
>
>"~~" would probably be safe since it's a no-op under current semantics;
>but "!!" is actually used by some people to convert an int into a canonical
>truth-value (i.e. map all non-zero values to 1).  I think this usage might
>even be mentioned in K&R?  Anyway, C++ is designed to extend the C language,
>as opposed to being a new language, so I suspect this is unacceptable.

i like the idea, i suggest changing the syntax to post operators:

	foo = ~foo;   -->   foo~~; /* Means: please bitwise-complement foo */
	foo = !foo;   -->   foo!!; /* Means: please logically-complement foo */

this will avoid any clashes with the existing syntax.

bing

-- 
"Break, but never bend."		from an oak tree i know
			...that can move in two directions at the same time

...akgua!galbp!bing