Inherit vector class

[cagenix]

I was running through a data structures book and I was curious if anyone could inform me of how to inherit the vector class to do a simple search and erase function. The example states:

vector_plus is a subclass of the vector class.
vector_plus has no new fields.
Define:

void erase_item(const T& item);

Here is an example of my header file:

#ifndef VECTOR_PLUS
#define VECTOR_PLUS
#include <vector>
using namespace std;
 
template<class T>
class vector_plus : public vector<T>
{
  public:
    vector_plus();
    void erase_item(const T& item);
};
 
#endif

In the erase_item method I would use the find method defined in <algorithm> and the erase method in <vector>.

Thank you so much for your help.

[Banfa]

In the erase_item method I would use the find method defined in <algorithm> and the erase method in <vector>.

Did you try it? Did it work?

[cagenix]

I tried to implement the class but for some reason I couldn't access the begin() method and the end() method of the vector class. I had to place the start iterator and the end of the list iterator in order for it to search the whole vector, but I couldn't get it to work.

[Prasannaa]

Hi

There sould not be any problems.
The following code compiles fine.
Post the error msgs that you got.

#include <vector>
using namespace std;
 
template<class T>
class vector_plus : public vector<T>
{
  public:
    vector_plus();
    void erase_item(const T& item)
    {
    iterator itr= find(begin(), end(), item);
    if(itr != end()) erase(itr);
    }
};

Regards
Prasannaa