uint8_t *buffer = (uint8_t *)[data mutableBytes];
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The efficiency depends on the query size relative to the data distribution. A small query in a sparse region prunes almost everything. A query that covers the whole space prunes nothing (because every node overlaps), degenerating to a brute-force scan. The quadtree gives you the most benefit when your queries are spatially local, which is exactly the common case for map applications, game physics, and spatial databases.
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2023 年 12 月的一封内部邮件显示，使用 LibGen 已在「上报至 MZ」之后获批，MZ 指的是 CEO 马克·扎克伯格。邮件还坦率地写明了他们自己都清楚的风险：「如果媒体报道暗示我们使用了已知为盗版的数据集，这可能会削弱我们在监管问题上的谈判立场。」，详情可参考heLLoword翻译官方下载
习近平指出，中国和德国分别是世界第二、第三大经济体，中德关系不仅关乎两国利益，也对欧洲和世界有重要辐射效应。当前国际形势正在经历第二次世界大战结束以来最深刻演变。世界越是变乱交织，中德两国越要加强战略沟通、增进战略互信，推动中德全方位战略伙伴关系不断得到新发展。