说明：  C++ 环境下的正则表达式引擎，RegExLab 的研究开发项目。 本文详细说明了DEELX 正则表达式语法并配以相关例子，方便学习验证。还针对编程提供了帮助以及相关示例
(C++ environment regular expression engine, RegExLab research and development projects. This article details the DEELX regular expression syntax and accompanied by relevant examples to facilitate learning validation. Has also provided assistance for the programming and related examples)