simultaneous assignment in c++

Topics

• c++ STL

In Python, we can do simultaneous assignment without any temp variable like this:

a, b = b, a%b

In C++, we can achieve the same using std::tie and std::make_tuple, which are part of the C++ Standard Template Library (STL) (under <tuple> header).

 // Simultaneously assigns b to a, and a%b to b
std::tie(a, b) = std::make_tuple(b, a % b);

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