Re: Virtual functions and destructors

Article View: comp.std.c++

Article #2549

#2549

From: Herb Sutter
Date: Sat, 11 Nov 1995 04:37

25 lines
1644 bytes

In article <4805l3$hst@steel.interlog.com>, I wrote:
>>   May I inquire when you would ever *not* want the destructor to be 
virtual?
>
>Check out the FAQ under Question 75 (or thereabouts, the number may have 
>changed slightly since my version), Cline's FAQ book under Questions 98-99, 
>Scott Meyers' "Effective C++" (can't recall the section as I loaned the book 
>to someone), C++PL2 pg 216, D&E concidentally also pg 216, etc.

I got off my duff and fetched the latest FAQ.  It's number 79 now, not 75.

>Short answer: When the class has no other virtual functions and you'll never 
>destroy derived objects through a base pointer.


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Herb Sutter                 2228 Urwin, Ste 102         voice (416) 618-0184
Connected Object Solutions  Oakville ON Canada L6L 2T2    fax (905) 847-6019


---
[ comp.std.c++ is moderated.  Submission address: std-c++@ncar.ucar.edu.
  Contact address: std-c++-request@ncar.ucar.edu.  The moderation policy
  is summarized in http://dogbert.lbl.gov/~matt/std-c++/policy.html. ]

Technical Details

Message-ID: <480s28$oi0@steel.interlog.com>

Path: arc1-ca.pugleaf.net!library.ucla.edu!agate!agate!Matt

References: <47r71q$cp0@bigboote.WPI.EDU> <martelli.815930692@cadlab> <47u94u$4of@bigboote.WPI.EDU> <4805l3$hst@steel.interlog.com>

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!library.ucla.edu!agate!agate!Matt
From: herbs@interlog.com (Herb Sutter)
Newsgroups: comp.std.c++
Subject: Re: Virtual functions and destructors
Date: 11 Nov 1995 04:37:42 GMT
Organization: Connected Object Solutions (div of Daystar Software Systems Design Inc.)
Approved: Matt@Austern
Message-ID: <480s28$oi0@steel.interlog.com>
References: <47r71q$cp0@bigboote.WPI.EDU> <martelli.815930692@cadlab> <47u94u$4of@bigboote.WPI.EDU> <4805l3$hst@steel.interlog.com>
NNTP-Posting-Host: austern.hip.berkeley.edu

Reply to Parent Message