I can't reply to the guy saying julia is the only one. But there are others. Ceres uses dual numbers https://github.com/ceres-solver/ceres-solver/blob/master/

I can't reply to the guy saying julia is the only one. But there are others. Ceres uses dual numbers https://github.com/ceres-solver/ceres-solver/blob/master/include/ceres/jet.h#L31 https://github.com/ceres-solver/ceres-solver/blob/master/inc... This library from google is used everywhere in robotics, so it's hardly some backwater little side project. So does c++ autodiff https://github.com/autodiff/autodiff/blob/main/autodiff/forward/dual/dual.hpp https://github.com/autodiff/autodiff/blob/main/autodiff/forw... So does Eigen: https://eigen.tuxfamily.org/dox/unsupported/AutoDiffScalar_8h_source.html https://eigen.tuxfamily.org/dox/unsupported/AutoDiffScalar_8...