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Geekpedia » C++ Tutorials » Smart Pointers - Part 1

Smart Pointers - Part 1

Programming tutorial for understanding "Smart Pointers".

On Wednesday, May 19th 2004 at 07:04 AM

By Hamed Zaghaghi (View Profile)

(Rated 2.7 with 15 votes)

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Smart Pointers :
"In C++, an object that implements the functionality of a pointer and additionaly performs some action whenever an object is accessed through it. Smart pointers are implemented by overloading the pointer-derefrence(->) operator".

above is about smart pointers,
but
how to overload the -> operator?
how to implement a "smart pointers"?
and are "smart pointers" useful?
are the FAQ of "smart pointers".
in this part I show that how to overload the -> operator by this example:




  class sp1

  {

       public:

           int data;

           sp1* operator ->() { return this;};

  };



  int main()

  {

       sp1 t;

       cin >> t.data;

       cout << t->data;

  }

see that (->) operator work the same as (.) operator.
NOTE:
(.) oprator can't be overloaded.
GoodLuck.

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Current Comments

by Sina Marandinan on Friday, May 21st 2004 at 09:38 PM

Nice, It is an intresting technic, tanx.

by Sina Marandinan on Friday, May 21st 2004 at 09:40 PM

Nice, It is an intresting technic, tanx.

by Shiva on Saturday, October 30th 2004 at 04:09 AM

Small and Superb tip to freshers who are new to C++ and guys who want to familiar with C++ Pointers.

by whatever on Friday, January 11th 2008 at 10:46 PM

You dont explain the part about the pointer being smart, how is that part used and how would one benefit from it in a program. kind of brief description.

still good effort