我试图从我创建的类使用std :: copy C++函数复制的对象的列表,但函数崩溃接下来的错误消息:0000005:访问冲突读取位置 0xFFFFFFFFFFFFFFFF在 MyProject.exe在0x00007FFA91BAC570(msvcr120.dll)C + +:std ::复制失败,访问冲突读取位置错误
未处理的异常。
这个类非常简单,我不知道什么会导致复制函数崩溃这样的错误。 类看起来如下:
class XMLObjects
{
private:
int id;
string name;
int leftUpCornerX;
int leftUpCornerY;
int rightDownCornerX;
int rightDownCornerY;
bool isFound; //it's true if this object was found in the OR file and in the GT file
public:
XMLObjects(){}
XMLObjects(int _id){ id = _id; }
XMLObjects(int _id, string _name, int _leftUpCornerX, int _leftUpCornerY, int _rightDownCornerX, int _rightDownCornerY) { id = _id; name = _name; leftUpCornerX = _leftUpCornerX; leftUpCornerY = _leftUpCornerY; rightDownCornerX = _rightDownCornerX; rightDownCornerY = _rightDownCornerY; isFound = false; }
~XMLObjects(){}
void setID(int _id){ id = _id; }
void setName(string _name){ name=_name; }
void setLeftUpCorner(int _leftUpCornerX, int _leftUpCornerY){ leftUpCornerX = _leftUpCornerX; leftUpCornerY = _leftUpCornerY; }
void setRightDownCorner(int _rightDownCornerX, int _rightDownCornerY){ rightDownCornerX = _rightDownCornerX; rightDownCornerY = _rightDownCornerY; }
void objectWasFound(){ isFound = true; }
int getID(){ return id; }
string getName(){ return name; }
int getLeftUpCornerX(){ return leftUpCornerX; }
int getLeftUpCornerY(){ return leftUpCornerY; }
int getRightDownCornerX(){ return rightDownCornerX; }
int getRightDownCornerY(){ return rightDownCornerY; }
bool isObjectFound(){ return isFound; }
};
复印功能的调用看起来如下:
list<XMLObjects> objects;
objects.push_front(obj1);
objects.push_front(obj2);
objects.push_front(obj3);
list<XMLObjects> NewObjectsList;
std::copy(objects.begin(), objects.end(), NewObjectsList.begin());
谁能帮助?
你必须使用'inserter' – Jarod42
为了扩大是,'NewObjectsList'是空的,而' std :: copy'不会调整它的大小。 – hlt
为什么不'名单 NewObjectsList = objects'? –
LogicStuff