Unlike the one-dimensional CAs I've shown you, both Life and Demon Cyclic Space are two-dimensional CAs; that is, the cells are arranged in a two-dimensionalgrid.
The purpose of xml_objects is to transform an XML document into a twodimensionalgrid representation that can more easily be stored in a relational database.
构建 xml_objects 的目的是将 XML 文档转换成一个两维网格表示，从而更易于在关系数据库中存储。
3
These grid orthogonal coordinates and one, two and three dimensional mesh patterns, which are produced by using the algorithm, are not only accurate, but also being generated efficiently.