Effective C++ 3e----new & delete(八)条款50：了解new和delete的合理替换时机 Effective C++ 3e----new & delete(八)条款50：了解new和delete的合理替换时机 Effective C++ 3e----new & delete(八)条款50：了解new和delete的合理替换时机 Effective C++ 3e----new & delete(八)条款50：了解new和delete的合理替换时机 Effective C++ 3e----new & delete(八)条款50：了解new和delete的合理替换时机 Effective C++ 3e----new & delete(八)条款50：了解new和delete的合理替换时机
