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.
"She's so strong," he added.
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The Daily Show host unpacked Trump's speech including his visceral, gory descriptions — "Oh my god, the violence. Was this a State of the Union speech or a Quentin Tarantino movie?" — and his dramatic reaction when Democrats didn't stand to applaud him.
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While she knows there is a difficult road ahead, she said she was determined to rebuild her life.