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From: Coywolf Qi Hunt <coywolf@gmail.com>
To: Bill Davidsen <davidsen@tmr.com>
Cc: "linux-os (Dick Johnson)" <linux-os@analogic.com>,
	Paul Jackson <pj@sgi.com>,
	francis_moreau2000@yahoo.fr, linux-kernel@vger.kernel.org
Subject: Re: Use enum to declare errno values
Date: Sat, 3 Dec 2005 01:07:04 +0800	[thread overview]
Message-ID: <2cd57c900512020907h4be23519q@mail.gmail.com> (raw)
In-Reply-To: <4390730F.8000909@tmr.com>

2005/12/3, Bill Davidsen <davidsen@tmr.com>:
> Coywolf Qi Hunt wrote:
>
> > This is a reason why enums are worse than #defines.
> >
> > Unlike in other languages, C enum is not much useful in practices.
>
> Actually they are highly useful if you know how to use them. They allow
> type checking, have auto increment, and are part of the language instead
>   of a feature of the preprocessor.

Yes, I know type checking and auto increment. But they are not
worthwhile, at least not for serious C programming. No, I don't know
how to use them comfortably.

What's wrong with sorted macros? They are more flexible and readable.
enums just look weird. We also share macros b/w C and asm.

You words on language and preprocessor doesn't make any sense.
It's not a feature of the preprocessor, it's what cpp is for. Look, I
call it Cpp. Without this `feature', what would a C preprocessor do?
You've castrated cpp.

Follow you logic, C standard should only specify C language, not
anything of libc...  I have no interest in arguing the relations b/w C
and cpp.

>
> > Maybe the designer wanted C to be as fancy as other languages?  C
> > shouldn't have had enum imho. Anyway we don't have any strong motives
> > to switch to enums.
>
> The last sentence seems correct in spite of your misunderstanding of how
> and why enums are used and useful. Like a driver who mis-read a map
> wandering aimlessly and lost, you have come to the correct destination
> by accident.

lol

>
> It would have been good to use enums in the first place, I can't see
> changing now because of the effort involved.

You contradict yourself rather.

--
Coywolf Qi Hunt
http://sosdg.org/~coywolf/

  reply	other threads:[~2005-12-02 17:07 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-11-23 13:24 moreau francis
2005-11-23 14:19 ` linux-os (Dick Johnson)
2005-11-23 14:24   ` Denis Vlasenko
2005-11-23 15:00     ` linux-os (Dick Johnson)
2005-11-24  7:19       ` Denis Vlasenko
2005-11-24  7:30         ` Paul Jackson
2005-11-24  7:37           ` Paul Jackson
2005-12-01 20:01           ` linux-os (Dick Johnson)
2005-12-02  6:49             ` Denis Vlasenko
2005-12-02  9:27               ` Coywolf Qi Hunt
2005-12-02 12:07                 ` Denis Vlasenko
2005-12-02 12:18                 ` Pekka Enberg
2005-12-02 12:56                   ` Coywolf Qi Hunt
2005-12-02 13:20                     ` Denis Vlasenko
2005-12-02 13:34                     ` Pekka Enberg
2005-12-02 16:02                     ` Bill Davidsen
2005-12-02 16:32                       ` Coywolf Qi Hunt
2005-12-02 16:56                       ` Vadim Lobanov
2005-12-04 13:10                         ` Denis Vlasenko
2005-12-02 16:15                 ` Bill Davidsen
2005-12-02 17:07                   ` Coywolf Qi Hunt [this message]
2005-12-02 17:51                     ` Steven Rostedt
2005-12-02 18:15                     ` Bill Davidsen
2005-12-02 18:30                     ` Horst von Brand
2005-11-23 14:27 ` Denis Vlasenko
2005-11-23 14:31 ` Denis Vlasenko
2005-11-23 15:15   ` Alan Cox
2005-11-23 15:44     ` moreau francis
2005-11-23 15:55       ` Nikita Danilov
2005-11-23 16:05         ` moreau francis
2005-11-23 16:24           ` Nikita Danilov
2005-11-23 16:42             ` moreau francis
2005-11-23 16:54               ` Nikita Danilov
2005-11-24  7:22       ` Denis Vlasenko
2005-11-23 17:35     ` Bill Davidsen
2005-11-24  9:43   ` Giuliano Pochini
2005-11-28 23:19     ` Bill Davidsen
2005-11-24 17:11 ` Ben Pfaff

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