C++ 通过无序集访问类数据工作不正常？

如果在尝试访问我的数据成员时遇到问题，我可以使用第二组眼睛来查看发生了什么。我的所有类get函数都遵循以下格式： 数据类型getItem（）常量{return item}

这是我的密码：

void listHash(int N, int MIN, string OFF, string DEF, int DOWN, int TOGO, int YARDLINE, vector<NFLData>& vdata){
    vector<NFLData> relevance;
    unordered_set<NFLData> data;

    for(int i = 0; i < vdata.size(); i++){
        data.insert(NFLData(vdata[i].getLine()));
    }
    unordered_set<NFLData>::iterator itr = data.begin();
    for(itr; itr != data.end(); ++itr){
        if(OFF == itr->getOffenseTeam()){
            if(DOWN == itr.getDown()){
            float rel;
            rel = -( (float)( abs(MIN - data->getMinute()) * (float)(5/3)) + (float)abs(TOGO - data->getYardsToGo() ) + (float)abs(YARDLINE - data->getYardline()) );
            if(DEF== itr->getOffenseTeam()){
                rel +=100;
            }
            string datas;
            datas = itr->getLine();
            relevance.push_back(NFLData(datas));
            }
        }
    }

void listHash（int N，int MIN，string OFF，string DEF，int DOWN，int TOGO，int YARDLINE，vector&vdata）{
向量相关性；
无序的集合数据；
对于（int i=0；igetOffenseTeam（））{
if（DOWN==itr.getDown（））{
浮动汇率；
rel=-（（float）（abs（MIN-data->getMinute（））*（float）（5/3））+（float）abs（TOGO-data->getYardsToGo（））+（float）abs（YARDLINE-data->getYardline（））；
如果（DEF==itr->getOffenseTeam（））{
rel+=100；
}
字符串数据；
datas=itr->getLine（）；
相关性。推回（NFLData（数据））；
}
}
}

以下是我尝试从迭代器调用函数时的错误：

driver_broke.cpp: In function âvoid listHash(int, int, std::string, std::string, int, int, int, std::vector<NFLData, std::allocator<NFLData> >&)â:
driver_broke.cpp:167: error: âstruct std::tr1::__detail::_Hashtable_iterator<NFLData, true, false>â has no member named âgetDownâ
driver_broke.cpp:169: error: base operand of â->â has non-pointer type âstd::tr1::unordered_set<NFLData, std::tr1::hash<NFLData>, std::equal_to<NFLData>, std::allocator<NFLData> >â
driver_broke.cpp:169: error: base operand of â->â has non-pointer type âstd::tr1::unordered_set<NFLData, std::tr1::hash<NFLData>, std::equal_to<NFLData>, std::allocator<NFLData> >â
driver_broke.cpp:169: error: base operand of â->â has non-pointer type âstd::tr1::unordered_set<NFLData, std::tr1::hash<NFLData>, std::equal_to<NFLData>, std::allocator<NFLData> >â

if(DOWN == itr->getDown())
//            ^^
//           Here

driver\u break.cpp:In函数-void listHash（int，int，std:：string，std:：string，int，int，std:：vector&）中：
驱动程序\u break.cpp:167:错误：struct std:：tr1:：\u详细信息：：\u哈希表\u迭代器–没有名为-getDown的成员
驱动程序\u break.cpp:169:error:-->的基操作数具有非指针类型–std:：tr1:：无序\u集–
驱动程序\u break.cpp:169:error:-->的基操作数具有非指针类型–std:：tr1:：无序\u集–
驱动程序\u break.cpp:169:error:-->的基操作数具有非指针类型–std:：tr1:：无序\u集–

迭代器具有指针语义。因此，您应该使用

->

通过迭代器访问成员：

driver_broke.cpp: In function âvoid listHash(int, int, std::string, std::string, int, int, int, std::vector<NFLData, std::allocator<NFLData> >&)â:
driver_broke.cpp:167: error: âstruct std::tr1::__detail::_Hashtable_iterator<NFLData, true, false>â has no member named âgetDownâ
driver_broke.cpp:169: error: base operand of â->â has non-pointer type âstd::tr1::unordered_set<NFLData, std::tr1::hash<NFLData>, std::equal_to<NFLData>, std::allocator<NFLData> >â
driver_broke.cpp:169: error: base operand of â->â has non-pointer type âstd::tr1::unordered_set<NFLData, std::tr1::hash<NFLData>, std::equal_to<NFLData>, std::allocator<NFLData> >â
driver_broke.cpp:169: error: base operand of â->â has non-pointer type âstd::tr1::unordered_set<NFLData, std::tr1::hash<NFLData>, std::equal_to<NFLData>, std::allocator<NFLData> >â

if(DOWN == itr->getDown())
//            ^^
//           Here

计算

rel

时，您引用的是

数据

，而不是

itr

：

rel = -( (float)( abs(MIN - itr->getMinute()) * (float)(5/3)) + (float)abs(TOGO - itr->getYardsToGo() ) + (float)abs(YARDLINE - itr->getYardline()) );

---

迭代器具有指针语义。因此，您应该使用

->

通过迭代器访问成员：

driver_broke.cpp: In function âvoid listHash(int, int, std::string, std::string, int, int, int, std::vector<NFLData, std::allocator<NFLData> >&)â:
driver_broke.cpp:167: error: âstruct std::tr1::__detail::_Hashtable_iterator<NFLData, true, false>â has no member named âgetDownâ
driver_broke.cpp:169: error: base operand of â->â has non-pointer type âstd::tr1::unordered_set<NFLData, std::tr1::hash<NFLData>, std::equal_to<NFLData>, std::allocator<NFLData> >â
driver_broke.cpp:169: error: base operand of â->â has non-pointer type âstd::tr1::unordered_set<NFLData, std::tr1::hash<NFLData>, std::equal_to<NFLData>, std::allocator<NFLData> >â
driver_broke.cpp:169: error: base operand of â->â has non-pointer type âstd::tr1::unordered_set<NFLData, std::tr1::hash<NFLData>, std::equal_to<NFLData>, std::allocator<NFLData> >â

if(DOWN == itr->getDown())
//            ^^
//           Here

计算

rel

时，您引用的是

数据

，而不是

itr

：

rel = -( (float)( abs(MIN - itr->getMinute()) * (float)(5/3)) + (float)abs(TOGO - itr->getYardsToGo() ) + (float)abs(YARDLINE - itr->getYardline()) );