const curTime = posToTime.get(pos);
have to go to the heap for more backing store. But we have avoided
。关于这个话题，雷电模拟器官方版本下载提供了深入分析
The quadtree is the two-dimensional case of a broader family of space-partitioning data structures. Octrees extend the same idea to three dimensions (splitting cubes into eight children), KD-trees use alternating axis-aligned splits (splitting along x, then y, then x again), and R-trees group nearby objects into bounding rectangles. Each variant makes different tradeoffs between construction time, query speed, and update cost.，更多细节参见搜狗输入法2026
The goal is to enable running multiple workloads on a single host with: