Quadtrees are everywhere spatial data exists. Mapping services use quadtree-like tile pyramids to serve map tiles at different zoom levels (Bing's quadkey system, for example, addresses tiles as base-4 paths). Game engines use them for collision detection and visibility culling. Geographic information systems use spatial indexes to store and query spatial datasets. PostGIS uses GiST indexes (R-tree-style) for spatial queries on geometries, while PostgreSQL's core supports quadtree-like SP-GiST indexes for certain data types like points.
这也是以Workday为代表的老牌SaaS软件巨头在面临“AI颠覆企业软件”言论下的直接回应。不过，这样的回应需要以更有力的证据证明。，推荐阅读同城约会获取更多信息
This article originally appeared on Engadget at https://www.engadget.com/apps/block-the-parent-of-square-and-cash-app-is-laying-off-over-4000-people-223343068.html?src=rss
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这一环节的优势十分突出，技术垄断性强、行业集中度高，现金流稳定，风险相对较低——无论下游“淘金客”成败，都离不开硬件工具的支撑。但风险同样不容忽视：技术迭代可能颠覆现有硬件需求，且过度依赖资本循环，若下游融资断裂，订单规模或将大幅缩水。