Build first, understand later.
While the Hashtable was part of the initial Java release over two decades ago, the HashMap is the correct key-value store to use today. One key HashMap vs. Hashtable difference is the fact that the ...
*it) = -0.04 + 0.2 * std::sin(3.0 * time.seconds() + 5.0 * position.y()) * position.x(); Eigen::Vector3d normal(-0.2 * std::sin(3.0 * time.seconds() + 5.0 * position ...