057c4195   
   From: leigh@i42.co.uk   
      
   On 17/07/2011 23:33, leo wrote:   
   > Hi,   
   >   
   > I have a problem here where I am not sure how to handle it. Firstly I   
   > am beginner. I have two constructors for a class and two reference   
   > variables declared but I can not use both references in one   
   > constructor. If cons1() is called I need ref1 to be used and if cons2   
   > is called I need ref2 to be used. The problem is in what should I   
   > reference ref1 to, when cons2 is called and similarly what ref2 should   
   > reference when cons1 is called. I am not sure how to initialize these   
   > references. It can't be NULL. I am not sure if its a good idea to   
   > point to some  invalid implementation. Should it? Is that even an   
   > option?  How is such a problem handled in c++?   
   >   
   >   
   > Class A   
   > cons1(Object1&  a) : ref1(a)   - here how should ref2 be handled?   
   > cons2(Object2&  b) : ref2(b) - here what should ref1 reference?   
   >   
   > Object1&  ref1   
   > Object2&  ref2   
   >   
   > Appreciate any advice.   
      
   The simplest solution is to use pointers rather than references and initialize   
   the other pointer to 0.   
      
   /Leigh   
      
      
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