You can use an underscore (Scala's standard wild card character) as a placeholder to catch any type of exception (really, to match any case in a pattern matching expression).
你可以使用一个下划线(Scala的标准通配符)作为占位符来捕捉任意类型的异常(不骗你，它可以匹配模式匹配表达式的任何case)。
Misuse intrusion testing technology is the most important link in a pattern matching the current model of matching reported mainly on the text of character string matching.
误用入侵检测技术中最重要的一个环节是模式匹配，目前的模式匹配主要是对报文中特征字符串的匹配。
After analyzing data and comparing automobile type of data ware, the max-data as criterion of vehicle classification, whole sample's data as character parameter of pattern matching.
通过分析采样数据和比较各车型波形后，采用实际采样波形的幅值作为车型分类判据标准，整条波形的采样值作为模式匹配的特征参数。
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