In file included from /in/driver/main.cpp:8:0:
/in/kdtree.hpp: In member function 'KDTree<std::tuple<_Elements ...>, ValueType>::Node* KDTree<std::tuple<_Elements ...>, ValueType>::erase(KDTree<std::tuple<_Elements ...>, ValueType>::Node*, const Key&)':
/in/kdtree.hpp:316:34: error: redeclaration of 'constexpr const size_t DIM_NEXT'
                 constexpr size_t DIM_NEXT = (DIM + 1) % KeySize;
                                  ^~~~~~~~
/in/kdtree.hpp:314:26: note: 'constexpr const size_t DIM_NEXT' previously declared here
         constexpr size_t DIM_NEXT = (DIM + 1) % KeySize;
                          ^~~~~~~~