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This section covers the regular expression syntax used by this library, this is a programmers guide, the actual syntax presented to your program's users will depend upon the flags used during expression compilation.
There are three main syntax options available, depending upon how you construct the regular expression object:
You can also construct a regular expression that treats every character as a literal, but that's not really a "syntax"!
本文介绍了Boost C++库中的正则表达式组件,提供了三种主要的语法选项:Perl(默认)、POSIX扩展和POSIX基本语法。这些选项可以根据应用程序的需求进行选择。





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