operator == in shared_ptr

From: sashan (sashang_at_[hidden])
Date: 2002-04-29 18:00:18

Hi

Because the operator== function compares pointers and not what they're pointing to this is what I've had to do to get it to find an integer. Basically I had to wrap the basic int type within another class called Int, as show below.

class Int
{
private:
 shared_ptr<int> p;

public:
 Int(int i) {p.reset(new int); *p = i;}
 bool operator==(const Int& r) {return *p.get() == *r.p.get();}
 ~Int() {};
};

void main()
{
 vector < Int > vec;
 vec.push_back(Int(1));
 vec.push_back(Int(2));
 vec.push_back(Int(3));
 Int p(4); 
 if (find(vec.begin(), vec.end(), p) == vec.end())
 {
  cout << "Couldn't find it";
 }
}

Is there a better way that doesn't involve 1) having to write a wrapper class around a basic type (or any type) and 2) doesn't involve changing the shared_ptr::operator==.

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