Daily briefing: Stem-cell treatment strengthens people with age-related frailty

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19:50, 27 февраля 2026Интернет и СМИ

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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with: [ any. any2 ] -> [ :pattern | pattern beLiteral ]; 

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