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d+在定期表达中意味着什么?
原标题:What does d+ mean in a regular expression?
  • 时间:2010-05-15 19:53:02
  •  标签:
  • regex

正式表述。

最佳回答

<代码>d为位数(幅度代码>[0-9])和<代码>+系指一次或多次。 因此,d+系指match one or more 数s>。

例如,<代码>42”与格式<代码>d+相吻合。


您也可通过(在线、免费)或(可免费免费上网视窗)等工具,找到对此类定期表述的解释,然后表明(如果有的话)符合该标准的内容。 他们还试图用词解释经常表达的内容。

问题回答

<编码>d称为特性类别,与数字相匹配。 等于<代码>[0-9]。

<代码>+对以前特性的1或更多发生作了对应。

http://code>d+系指1或以上数字。

<代码>d系指数字。 <代码>+系指1倍或多倍。 http://code>d+。 该编码将匹配<代码>12和1

d 系数,+为1名或1名以上,顺序为1名或1名以上。





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