c++ - 遍历 vector c++ 中的列表

Question

我有这个代码:

#include <iostream>
#include <vector>
#include <list>

using namespace std;

class Graph {
    public:
        //Create graph with n nodes
        Graph(int size);
             ~Graph();

        //Initialize graph
        void InitializeGraphWithRandomNum();


    private:

        vector <list <int*> > *graph;

};


void Graph::InitializeGraphWithRandomNum() {
    //Here I want to iterate
    for (int i=0; i< graph->size(); i++) {
        std::list <int*>::iterator it;
        for (it = graph[i].begin(); it< graph[i].end();++it) {
                 ..........
            }

    }
}

这里有问题。它说

No match for ‘operator=’ in ‘it = (((Graph*)this)->Graph::graph + ((unsigned int)(((unsigned int)i) * 12u)))->std::vector<_Tp, _Alloc>::begin with _Tp = std::list, _Alloc = std::allocator >, std::vector<_Tp, _Alloc>::iterator = __gnu_cxx::__normal_iterator*, std::vector > >, typename std::_Vector_base<_Tp, _Alloc>::_Tp_alloc_type::pointer = std::list*’ DejkstraAlg.cpp

谢谢 最好的

Answer 1

graph 是指向 vector 的指针，而不是 vector 。要么将其声明为 vector ，要么使用 (*graph)[i].begin()。