stdmap

How to iterate through a std::map<string,int> and std::vector<int> using single for loop ? I have seen this questions but could not solve my problem. I am trying like this map<string,int> data; data["Shravan"] = 1; data["Mama"] = 2; data["Sa1"] = 3; data["Jhandu"] = 4; vector<int> values = {1,2,3,4}; for(const auto& it1: data,it2 : values) { // Do something } Edit : I can not go through one by one. Because i am using the key of std::map and value of std::vector in the same function. Which will be called inside for loop. Both the container of same size. If you know there's both the same length,

The Problem I have a std::map<int, std::set<int>> named misi . I'm wondering why misi.emplace(2345, {6, 9}); and misi.emplace({2345, {6, 9}}); don't work as expected, as shown below. The Code #include <set> // std:set #include <map> // std::map #include <utility> // std::piecewise_construct, std::pair #include <tuple> // std::forward_as_tuple #include <iostream> // std::cout, std::endl int main() { // --- std::set initializer list constructor --- std::set<int> si({42, 16}); std::cout << "si.size(): " << si.size() << std::endl; // 2 std::cout << "*si.begin(): " << *si.begin() << std::endl; //

Sorry if the question is very trivial. I have a vector of maps: typedef map<char, int> edges; typedef vector<edges> nodes; nodes n; Now let's say I want to push a toy edge. I tried different things and what I worked is edges e; //declare an edge e['c'] = 1; //initialize it n.push_back(e); //push it to the vector How can I just push the pair of values of an edge ('c' and 2) without having to declare a variable and initialize it? Something like: n.push_back(edges('c',2)); but compiler gives an error error: no matching function for call to ‘std::map<char, int>::map(char, int)’ You can list