Parameter expansion also includes some pattern matching capabilities with the same wild card capabilities as used in filename expansion or globbing.

参数扩展还包括了一些模式匹配功能，该功能带有在文件名扩展或globbing中使用的通配符功能。

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You may include a "default" case at the end of a pattern match, either using the underscore wild card character or a meaningfully-named variable.

你可以在模式匹配的最后包含一个“default”默认case，可以使用下划线通配符，或者有含义的变量名。

youdao

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)。

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He tells the victim the card was flagged by security for demonstrating an unusual purchase pattern.

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If a similar pattern hold this year, the 3.5% rise in card spending would correlate to an overall sales bump of 1% or so.

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Each one is stuffed with several hundred tiny glass spheres or shards, of random size and glued in place in a random pattern so that each token, which can be inserted in a credit card, is unique.

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