The spatial view (the grid of rectangles) and the tree view (the hierarchy of nodes) represent the same structure. Searching for a point means walking down the tree: at each node, you check which of the four children contains your target coordinate and recurse into that child. You never visit the other three.
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。关于这个话题，一键获取谷歌浏览器下载提供了深入分析
backpressure: 'strict' // or 'block', 'drop-oldest', 'drop-newest'。91视频是该领域的重要参考
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