正则表达式 中的加号
时间: 2023-10-08 21:10:29 浏览: 91
正则表达式中的加号表示前面的字符可以出现1次或多次,但必须至少出现1次。如果该字符没有出现,那么模式就不会匹配。 例如,使用正则表达式"be+t",可以匹配到"beet"和"beeeet"这两个字符串,但无法匹配到"bet"和"bt"这两个字符串。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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