分隔符之间的C#正则表达式替换

Question

我想用另一个集合替换标记11=和~之间的所有字符。示例11=1234~应替换为11=56789~。第一个分隔符应该是以单词为界的，即111=不应该匹配

Answer 1

好吧，你已经回答了你的问题：

resultString = Regex.Replace(subjectString, @"(?<=\b11=).*?(?=~)", "56789");

这是.NET，你可以把它翻译成其他口味/引擎。

说明：

@"
(?<=      # Assert that the regex below can be matched, with the match ending at this position (positive lookbehind)
   \b        # Assert position at a word boundary
   11=       # Match the characters “11=” literally
)
.         # Match any single character that is not a line break character
   *?        # Between zero and unlimited times, as few times as possible, expanding as needed (lazy)
(?=       # Assert that the regex below can be matched, starting at this position (positive lookahead)
   ~         # Match the character “~” literally
)
"