Vector iterators incompatible error for a vector holding iterators of another vector

Question

参考这个，我纠正了我的错误并将迭代器更改为相同的 "vector type" 即

我替换了行

auto startIter = table.begin();

和

auto startIter = tabTypeIterVector[0];

在 AccessTableIteratorsVector() 函数的 for 循环中。然而，在下面的代码中，我仍然收到“调试断言失败，向量迭代器不兼容错误， 当在 for 循环中命中此行时

itloop !=-endIter

typedef vector<vector<string> tableDataType;
vector<tableDataType::Iterator> tabTypeIterVector;
tableDataType table;
FillRows(vector<string> vstr)
{
    table.push_back(vstr);
    if(some_condition_satisfied_for_this_row())
    {
        tableDataType::Iterator rowIT = table.end();
        tabTypeIterVector.push_back(rowIT);
    }
}


In another function:

AccessTableIteratorsVector()
{
auto startIter =  tabTypeIterVector[0];
auto endIter = tabTypeIterVector[1];
   for(auto itloop=startIter; itloop !=-endIter;itloop++)
   {

   }
}

Answer 1

push_back might cause a reallocation of the data contained in the vector. And that reallocation will make all iterators to the vector invalid. Dereferencing invalid iterators leads to undefined behavior.

向量中的索引将继续有效，除非您从向量中删除元素。

Vector iterators incompatible error for a vector holding iterators of another vector

Vector iterators incompatible error for a vector holding iterators of another vector

c++

c++11

vector

iterator

incompatibletypeerror