vector的push_back对于拷贝构造和赋值操做的调用

http://blog.csdn.net/silyvin/article/details/8985323函数 对应与CArray，补充一个vector的测试。测试 class A { int *m_a; int bb; private: A(); public: A(int n) { m_a = new int; *m_a = n; } A(A const & _a) {

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