Regular expressions are convenient for extracting data from strings that have an informal structure, but are not "structured data" (that is, in a format like XML or JSON, for example).
正则表达式用来从有着非正式结构的字符串中提取数据是很方便的，但是对“结构性数据”(就是类似XML，或者JSON那样的格式)则不是。
Regular expressions are convenient for extracting data from strings that have an informal structure, but are not "structured data" (that is, in a format like XML or JSON, for example).
正则表达式用来从有着非正式结构的字符串中提取数据是很方便的，但是对“结构性数据”(就是类似XML，或者JSON那样的格式)则不是。
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