#### Category : std-pair

how can i pick the different numbers of both numbers in a pair entry more efficiently if(loc[0].first!=loc[1].first && loc[0].first!=loc[2].first) x=loc[0].first; if(loc[1].first!=loc[0].first && loc[1].first!=loc[2].first) x=loc[1].first; if(loc[2].first!=loc[0].first && loc[2].first!=loc[1].first) x=loc[2].first; if(loc[0].second!=loc[1].second && loc[0].second!=loc[2].second) y=loc[0].second; if(loc[1].second!=loc[0].second && loc[1].second!=loc[2].second) y=loc[1].second; if(loc[2].second!=loc[0].second && loc[2].second!=loc[1].second) y=loc[2].second; Source: Windows Que..

The following code doesn’t compile. The line with pair is giving the error. Is there some other way to access the data or is this way correct?? unordered_map<int,int> hm; unordered_map<int,int>::iterator it; it=find(hm.begin(),hm.end(),x+c); if (it!=hm.end()) { bNotFound = false; pair<int,int> p = *it; ind = p.second; } Source: Windows Que..

I have these files and coding, it’s supposed to have user score teams in alliances for team placement but for some reason it prints the results three times, while fixing this I also wish to make it look nicer while still keeping the approach I have: file matches.txt: 225 6239 1418 3650 888 2199 4050 ..

Suppose we have an array of doubles x and an array of indices y, and we want to sort these indices by the respective values in x (so, sort [i in y] by x[i] as key). We can then create an array of pairs, with one component being the key value and one being the ..

I want to order some strings by their indexes. And I don’t want to use two different types of priority queue. #include <string> #include <queue> #include <utility> int main() { const std::string &a = "hello"; std::pair<int, const std::string &> p = std::make_pair(1, a); std::priority_queue<std::pair<int, const std::string &>> pq; pq.push(p); return 0; } So how to ..

just to clear this doubt of fine i just want to ask that which method is faster or more efficient to access pairs while iterating over a contiguous block of pairs. I used two method to iterate over a block. 1st pair<int, char> arr[3] = {{1, ‘a’}, {2, ‘b’}, {3, ‘c’}}; for (int i = ..

In an assignment i was given a method that looks like this std::pair<double, double> operator()(const Eigen::VectorXd &vec, int index) const { return (*this)(vec[index – 1], vec[index], vec[index + 1], vec[index + 2]); } I am a little bit confused on the return type of the method. Shouldn’t it be a std::pair<double*, double*>? Moreover, how can ..