Comments:	Authenticated sender is <alaric+abwillms AT sdps DOT demon DOT co DOT uk>
From:	"Alaric B. Williams" <alaric AT abwillms DOT demon DOT co DOT uk>
To:	Chris Croughton <crough45 AT amc DOT de>
Date:	Thu, 10 Apr 1997 19:19:50 +0000
MIME-Version:	1.0
Subject:	Re: funny re user-defined ++ and -- operators
Reply-to:	alaric AT abwillms DOT demon DOT co DOT uk
CC:	djgpp AT delorie DOT com
In-reply-to:	<97Apr9.103812gmt+0100.21897@internet01.amc.de>
Message-ID:	<860696209.111757.0@abwillms.demon.co.uk>

On  9 Apr 97 at 9:41, Chris Croughton wrote:

> Alaric B. Williams wrote: 
 
> >>operator++(int) is postfix
> >>operator++() is prefix
> >
> >The ugliest syntax hack ever to see the light of day :-(
 
> Not quite, I think, but close. 

Oh, I forgot COBOL!

> However, it's certainly one of
> the most counter-intuitive ones - the first looks prefix, with
> the parameter after the operator, and the second looks postfix
> with the variable obviously before (as in x.operator++()).

Yeah :-(

I like Prolog syntax - can't remember it right now, but you
tell it operators are one of:

xfy
yfx
xf
fx

Where f represents the operator, x represents the operand
evaluated first (so we can specify left or right associativity
with the xfy and yfx versions), and y is an optional other
operand. Easy...

> On the same subject, is there a decent C++ book which comes 
> close to the current draft standard? 

To be honest, I haven't a clue! I can recommend a good Scheme
book, since that's what I'm learning...

> The ones I've seen seem
> to be several years out of date.  The only recent standard I've 
> come across is that on the Web at http://www.setech.com/x3.html
> which is the current discussion document, but that's reference
> and doesn't really discuss it in an easily understood way (it
> took me over an hour to find the 'delete' operator, for instance).

Yuck! C++ ain't one of the best documented languages in the world...
 
> >(Windows for Early Warning and Defence User's manual P26)
 
> Oh yes, I looked at your site.  Do you have any more of the 
> manual than the excerpts on your page? 

Only when I get them from my inside source at Macrosoft (he's got a prerelease
beta under a nondisclosure agreement, so I can't reveal his name).

> I put in a link from
> my Web page (http://www.keris.demon.co.uk/), and at least
> one person has followed it and wants a copy of WfEWD...

A Macrosoft representative has been quoted as saying that WfEWaD will
be released several weeks ago - they really go in for pushing the release
date back..
 
> Chris

ABW 
--
Alaric B. Williams (alaric AT abwillms DOT demon DOT co DOT uk)

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