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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.
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Pakistan says it has "conclusive evidence" that TTP has been behind a series of attacks in the country, including the recent suicide bombing of a Shia mosque in Islamabad in which more than 30 people were killed. IS claimed to be behind the Islamabad attack, but Pakistan has said it has "conclusive evidence" the TTP is behind it.
Ранее глава Минфина Антон Силуанов признал, что из-за падения нефтегазовых доходов властям придется несколько скорректировать закон о федеральном бюджете в части расходов.
然后，求才若渴的 Meta 出手了。