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The infix index would match substrings anywhere within the string.
中缀索引将匹配在字符串内任意位置的子字符串。
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Regular Expressions are a powerful way to test and match substrings.
正则表达式是一种测试或者匹配字串的强大的方式。
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Regular Expressions are a powerful way to test and match substrings.
正则表达式是一种测试或者匹配字串的强大的方式。
youdao