Unnamed objects.

Article View: net.lang.c++

Article #382

#382

From: Stephen J. Muir
Date: Fri, 07 Nov 1986 20:20

27 lines
1357 bytes

I have defined a type to close a file automatically when it goes out of scope:

class auto_close
{   int	stored_fd;
public:
    auto_close (int fd)	{ stored_fd = fd; }
    ~auto_close ()	{ int e = errno; close (stored_fd); errno = e; }
};

Now, after opening a file:

fd = open ("file", 0)

I declare one of these:

auto_close my_close (fd);

The only problem is I have to think up a name (my_close) which I never use.  Is
there any way to get away with not having to think up a name?  If there isn't,
I think there should be!

BSD 4.2, VAX-11/750, C++ 1.1.
-- 
EMAIL:	stephen@comp.lancs.ac.uk	| Post: University of Lancaster,
UUCP:	...!mcvax!ukc!dcl-cs!stephen	|	Department of Computing,
Phone:	+44 524 65201 Ext. 4120		|	Bailrigg, Lancaster, UK.
Project:Alvey ECLIPSE Distribution	|	LA1 4YR

Technical Details

Message-ID: <636@comp.lancs.ac.uk>

Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!mcvax!ukc!dcl-cs!stephen

Show Full Headers

Complete Article Headers

Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!mcvax!ukc!dcl-cs!stephen
From: stephen@comp.lancs.ac.uk (Stephen J. Muir)
Newsgroups: net.lang.c++
Subject: Unnamed objects.
Message-ID: <636@comp.lancs.ac.uk>
Date: Fri, 7-Nov-86 15:20:32 EST
Article-I.D.: comp.636
Posted: Fri Nov  7 15:20:32 1986
Date-Received: Sun, 9-Nov-86 03:05:05 EST
Reply-To: stephen@comp.lancs.ac.uk (Stephen J. Muir)
Distribution: world
Organization: Department of Computing at Lancaster University, UK.
Lines: 27