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High-performance JavaScript R-tree-based 2D spatial index
RBush is a high-performance JavaScript library for 2D spatial indexing of points and rectangles. It's based on an optimized R-tree data structure with bulk insertion support. Spatial index is a special data structure for points and rectangles that allows you to perform queries like "all items within this bounding box" very efficiently (e.g. hundreds of times faster than looping over all items). It's most commonly used in maps and data visualizations. The demos contain visualization of trees...
Delphi class which implements an associative array. Keys can be strings or integers. Keys are stored in Red-Black tree. Array can contain TObjects or it descendants.
JSONER is a JavaScript library intented to simplify most used operations with JSON based on event API on JSONtree. It includes: data lookup and binding solution, HTML form by JSON dynamically creation and population, transformation and comparison JSONs.
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