Built on top of LLVM's Clang parsers, it looks at the library sources and generates metadata that MacRuby can use to understand what the library expects, ie. blocks, symbols, etc.
由于构建在LLVM的Clang解析器上，它可以 查看到库的源代码并生成MacRuby所能使用的元数据，之后MacRuby可以使用这些元数据获悉库接收的到底是什么，比如块、符号等等。
The visual symbols of libraries are increasingly profound impact on peoples thinking and behavior patterns, how to be a reasonable application of visual symbols is worthy to be considered by library.
图书馆的视觉符号正日益深刻地影响着人们的思想观念和行为方式，如何合理应用视觉符号值得图书馆界的思考，随着信息时代的到来，图书馆的视觉符号呈现新的趋势。
The practice proved to apply that the method establish 3D statistic map symbols library in common use, and application to the making of thematic map could get better effect.
实践证明，利用该方法建立常用的三维统计地图符号库，并将其应用于专题地图的制作，能取得良好的效果。
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