• Zarathustra (13/13) Aug 06 2008 class CFoo{
• BCS (4/16) Aug 06 2008 that doesn't work because this is a hidden arg to the function, you can ...
• Koroskin Denis (2/18) Aug 06 2008
• Zarathustra (3/24) Aug 06 2008 Reply to BCS,

Zarathustra <adam.chrapkowski gmail.com> writes:

class CFoo{
  public void destroy(){ delete this; } // ok
  public void forget(){ this = null; }   // ok but no effect
}

void
main(){
  auto l_fooA = new CFoo;
  
  auto l_fooB = l_fooA;
  l_fooA.forget; // no effect
  l_fooA = null;  // now ok

  l_fooB.destroy;  // ok 
}

BCS <ao pathlink.com> writes:

Reply to Zarathustra,

 class CFoo{
 public void destroy(){ delete this; } // ok
 public void forget(){ this = null; }   // ok but no effect
 }

that doesn't work because this is a hidden arg to the function, you can change 
its value but as with any other local value that doesn't effect the value 
used to call the function.

 void
 main(){
 auto l_fooA = new CFoo;
 auto l_fooB = l_fooA;
 l_fooA.forget; // no effect
 l_fooA = null;  // now ok
 l_fooB.destroy;  // ok }
 

"Koroskin Denis" <2korden gmail.com> writes:

On Wed, 06 Aug 2008 22:05:48 +0400, BCS <ao pathlink.com> wrote:

 Reply to Zarathustra,

 class CFoo{
 public void destroy(){ delete this; } // ok
 public void forget(){ this = null; }   // ok but no effect
 }



In fact, this should be disallowed (and it is in c++).

 that doesn't work because this is a hidden arg to the function, you can  
 change its value but as with any other local value that doesn't effect  
 the value used to call the function.

 void
 main(){
 auto l_fooA = new CFoo;
 auto l_fooB = l_fooA;
 l_fooA.forget; // no effect
 l_fooA = null;  // now ok
 l_fooB.destroy;  // ok }

Zarathustra <adam.chrapkowski gmail.com> writes:

BCS Wrote:

 Reply to Zarathustra,
 
 class CFoo{
 public void destroy(){ delete this; } // ok
 public void forget(){ this = null; }   // ok but no effect
 }

 
 that doesn't work because this is a hidden arg to the function, you can change 
 its value but as with any other local value that doesn't effect the value 
 used to call the function.
 
 void
 main(){
 auto l_fooA = new CFoo;
 auto l_fooB = l_fooA;
 l_fooA.forget; // no effect
 l_fooA = null;  // now ok
 l_fooB.destroy;  // ok }
 

 
 

Reply to BCS,

Ok thanks for explain it. All regards!