Element-wise tuple addition

Question

I have some values held in a tuple, and I am looking to add another tuple to it element-wise. So I would like functionality like this:

std::tuple<int,int> a = {1,2}; std::tuple<int,int> b = {2,4};   std::tuple<int,int> c = a + b; // possible syntax 1 a += b; // possible syntax 2 a += {2,4}; // possible syntax 3 

Where the output tuple would have the value {3,6}

Was looking at CPP reference, but I couldn't find this functionality. It's possible that this and this question are relevant, however the answers are obfuscated by other complexities.

Answer 1

You could also consider using std::valarray since it allows exactly the things that you seem to want.

#include <valarray>  int main() {     std::valarray<int> a{ 1, 2 }, b{ 2, 4 }, c;     c = a - b; // c is {-1,-2}     a += b; // a is {3,6}     a -= b; // a is {1,2} again     a += {2, 4}; // a is {3,6} again     return 0; }