{"id":5740,"date":"2019-07-08T19:19:43","date_gmt":"2019-07-08T19:19:43","guid":{"rendered":"https:\/\/www.modernescpp.com\/index.php\/regular-expressions\/"},"modified":"2023-06-26T10:05:06","modified_gmt":"2023-06-26T10:05:06","slug":"regular-expressions","status":"publish","type":"post","link":"https:\/\/www.modernescpp.com\/index.php\/regular-expressions\/","title":{"rendered":"The Regular Expression Library"},"content":{"rendered":"

My original plan was to write about the rules of the C++ Core Guidelines for the regex and chrono library, but besides the subsection title, no content is available. I already wrote a few posts about time <\/a>functionality. So I’m done. Today, I fill the gap and write about the regex library.<\/p>\n

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\"concept<\/p>\n

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Okay, here are my rules for regular expressions.<\/p>\n<\/p>\n

Only use a Regular Expression if you have to<\/h2>\n

Regular expressions are powerful but also sometimes expensive and complicated machinery to work with text. When the interface of a std::string<\/span> or the algorithms of the Standard Template Library can do the job, use them.  <\/p>\n

Okay, but when should you use regular expressions? Here are the typical use cases.<\/p>\n

Use-Case for Regular Expressions<\/h3>\n