Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!ut-emx!nowhere!sking
From: sking@nowhere.uucp (steven king)
Newsgroups: comp.lang.c++
Subject: Re: Classes with limited #'s of instances
Message-ID: <9008160427.690@nowhere.uucp>
Date: 16 Aug 90 04:27:05 GMT
Organization: nowhere
Lines: 23


Beware of using something like
   
   foo::foo()
   {
      if(this)
         // some sort of error signaling
   }

to prevent automatic creation ("on the stack") ie.

   main()
   {   
      foo   foobar;
   }

it will also prevent using the class as a base class or using it as a
global since in both cases the value passed as _this_ to the constructor will
be a valid non null pointer.
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