error C2039: “iterator_category”: 不是“Degree”的成员

今天真的是十分郁闷，遇到这个名为error C2039: “iterator_category”: 不是“***”的成员，上网谷哥、度娘了一番，得到的结果全是说可能是用的某个名字与库中的重合了，结果试了整整的一个下午加晚上，验证了所有的名字之后，发现问题不是这样的！！！

改后代码：

//vector<Degree> deg;//用来描述从源点source到v的最短路径上权值的上界Degree* deg = new Degree[MAXSIZE];priority_queue<Degree, vector<Degree>, cmp> Q(deg, deg + MAXSIZE); 

改前代码：

vector<Degree> deg;//用来描述从源点source到v的最短路径上权值的上界priority_queue<Degree, vector<Degree>, cmp> Q(deg[0], deg[MAXSIZE]; 

错误提示：

1>------ 已启动生成: 项目: Dijkstra, 配置: Debug Win32 ------1>  main.cpp1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(373): error C2039: “iterator_category”: 不是“Degree”的成员1>          c:\users\chenhq\desktop\dijkstra\dijkstra\degree.h(4) : 参见“Degree”的声明1>          d:\program files\microsoft visual studio 10.0\vc\include\vector(550): 参见对正在编译的类 模板 实例化“std::iterator_traits<_Iter>”的引用1>          with1>          [1>              _Iter=Degree1>          ]1>          d:\program files\microsoft visual studio 10.0\vc\include\queue(247): 参见对正在编译的函数 模板 实例化“std::vector<_Ty>::vector<_Iter>(_Iter,_Iter)”的引用1>          with1>          [1>              _Ty=Degree,1>              _Iter=Degree1>          ]1>          c:\users\chenhq\desktop\dijkstra\dijkstra\dijkstra.h(20): 参见对正在编译的函数 模板 实例化“std::priority_queue<_Ty,_Container,_Pr>::priority_queue<Degree>(_Iter,_Iter)”的引用1>          with1>          [1>              _Ty=Degree,1>              _Container=std::vector<Degree>,1>              _Pr=cmp,1>              _Iter=Degree1>          ]1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(373): error C2146: 语法错误: 缺少“;”(在标识符“iterator_category”的前面)1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(373): error C4430: 缺少类型说明符 - 假定为 int。注意: C++ 不支持默认 int1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(373): error C2602: “std::iterator_traits<_Iter>::iterator_category”不是“std::iterator_traits<_Iter>”基类的成员1>          with1>          [1>              _Iter=Degree1>          ]1>          d:\program files\microsoft visual studio 10.0\vc\include\xutility(373) : 参见“std::iterator_traits<_Iter>::iterator_category”的声明1>          with1>          [1>              _Iter=Degree1>          ]1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(373): error C2868: “std::iterator_traits<_Iter>::iterator_category”: 非法的 using 声明语法；应输入限定名1>          with1>          [1>              _Iter=Degree1>          ]1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(374): error C2039: “value_type”: 不是“Degree”的成员1>          c:\users\chenhq\desktop\dijkstra\dijkstra\degree.h(4) : 参见“Degree”的声明1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(374): error C2146: 语法错误: 缺少“;”(在标识符“value_type”的前面)1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(374): error C4430: 缺少类型说明符 - 假定为 int。注意: C++ 不支持默认 int1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(374): error C2602: “std::iterator_traits<_Iter>::value_type”不是“std::iterator_traits<_Iter>”基类的成员1>          with1>          [1>              _Iter=Degree1>          ]1>          d:\program files\microsoft visual studio 10.0\vc\include\xutility(374) : 参见“std::iterator_traits<_Iter>::value_type”的声明1>          with1>          [1>              _Iter=Degree1>          ]1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(374): error C2868: “std::iterator_traits<_Iter>::value_type”: 非法的 using 声明语法；应输入限定名1>          with1>          [1>              _Iter=Degree1>          ]1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(375): error C2039: “difference_type”: 不是“Degree”的成员1>          c:\users\chenhq\desktop\dijkstra\dijkstra\degree.h(4) : 参见“Degree”的声明1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(375): error C2146: 语法错误: 缺少“;”(在标识符“difference_type”的前面)1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(375): error C4430: 缺少类型说明符 - 假定为 int。注意: C++ 不支持默认 int1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(375): error C2602: “std::iterator_traits<_Iter>::difference_type”不是“std::iterator_traits<_Iter>”基类的成员1>          with1>          [1>              _Iter=Degree1>          ]1>          d:\program files\microsoft visual studio 10.0\vc\include\xutility(375) : 参见“std::iterator_traits<_Iter>::difference_type”的声明1>          with1>          [1>              _Iter=Degree1>          ]1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(375): error C2868: “std::iterator_traits<_Iter>::difference_type”: 非法的 using 声明语法；应输入限定名1>          with1>          [1>              _Iter=Degree1>          ]1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(377): error C2039: “pointer”: 不是“Degree”的成员1>          c:\users\chenhq\desktop\dijkstra\dijkstra\degree.h(4) : 参见“Degree”的声明1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(377): error C2146: 语法错误: 缺少“;”(在标识符“pointer”的前面)1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(377): error C4430: 缺少类型说明符 - 假定为 int。注意: C++ 不支持默认 int1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(377): error C2602: “std::iterator_traits<_Iter>::pointer”不是“std::iterator_traits<_Iter>”基类的成员1>          with1>          [1>              _Iter=Degree1>          ]1>          d:\program files\microsoft visual studio 10.0\vc\include\xutility(377) : 参见“std::iterator_traits<_Iter>::pointer”的声明1>          with1>          [1>              _Iter=Degree1>          ]1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(377): error C2868: “std::iterator_traits<_Iter>::pointer”: 非法的 using 声明语法；应输入限定名1>          with1>          [1>              _Iter=Degree1>          ]1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(378): error C2039: “reference”: 不是“Degree”的成员1>          c:\users\chenhq\desktop\dijkstra\dijkstra\degree.h(4) : 参见“Degree”的声明1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(378): error C2146: 语法错误: 缺少“;”(在标识符“reference”的前面)1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(378): error C4430: 缺少类型说明符 - 假定为 int。注意: C++ 不支持默认 int1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(378): error C2602: “std::iterator_traits<_Iter>::reference”不是“std::iterator_traits<_Iter>”基类的成员1>          with1>          [1>              _Iter=Degree1>          ]1>          d:\program files\microsoft visual studio 10.0\vc\include\xutility(378) : 参见“std::iterator_traits<_Iter>::reference”的声明1>          with1>          [1>              _Iter=Degree1>          ]1>d:\program files\microsoft visual studio 10.0\vc\include\xutility(378): error C2868: “std::iterator_traits<_Iter>::reference”: 非法的 using 声明语法；应输入限定名1>          with1>          [1>              _Iter=Degree1>          ]1>d:\program files\microsoft visual studio 10.0\vc\include\vector(550): error C2664: “void std::vector<_Ty>::_Construct<_Iter>(_Iter,_Iter,std::_Int_iterator_tag)”: 不能将参数 3 从“int”转换为“std::_Int_iterator_tag”1>          with1>          [1>              _Ty=Degree,1>              _Iter=Degree1>          ]1>          无构造函数可以接受源类型，或构造函数重载决策不明确========== 生成: 成功 0 个，失败 1 个，最新 0 个，跳过 0 个 ==========

后来，再看回错误的提示，关注到了这个

1>          with1>          [1>              _Iter=Degree1>          ]

出现的频率非常之高，我想是不是参数哪里出错了！！坑爹啊，真的是啊

因为是第一次学着用“优先级队列”，还没弄清楚，但是现在知道了一点，后面的参数是要为指针