与典型shell相比，Squirrel的优秀特性之一就是它丰富的数据结构。
One of the nice features of Squirrel is its rich set of data structures relative to typical shells.
它为丰富的功能性数据结构提供了清晰的标准化途径，并通过越来越多的工具来支撑它，这些工具是用来执行语法分析和确认这些费力的工作的。
It provides a clean, standardized path to rich, functional data structures, and backs it up with a growing number of tools for doing the dirty work of parsing and validation.
正则表达式提供了跨文本的字符串的更丰富的模式匹配，但在遍历诸如xml树这样的数据结构时，它和XPath一样易于使用。
Regular expressions provide much richer pattern matching across strings of text, but are as easy to use as XPath when traversing a data structure such as an XML tree.
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