小编Mar*_*inD的帖子

以下代码演示了一种确保向量完全释放的技巧:

#include <vector>

using namespace std;

template<typename T>
class tvector : public vector<T>
{
    public:
    typedef vector<T> base;
    void swap(tvector<T>& v) {
        // do some other stuff, but omitted here.
        base::swap(v); }
};

int main()
{
    tvector<int> tv1;
    // imagine filling tv1 with loads of stuff, use it for something...

    // now by swapping with a temporary declaration of an empty tvector that should
    // go out of scope at the end of the line, we get all memory used …