Hello Boost.Xpressive is an extension of Hello World. Like Hello World, Hello Boost.Xpressive is a simple console application. Hello Boost.Xpressive, however, also requires the Boost.Xpressive library.

The base code of Hello Boost.Xpressive is:


#include <iostream>

#include <boost/xpressive/xpressive.hpp>



///Example adapted from http://www.boost.org/doc/libs/1_54_0/doc/html/xpressive/user_s_guide.html

int main()

{

  const std::string hello( "hello world!" );



  const boost::xpressive::sregex rex = boost::xpressive::sregex::compile( "(\\w+) (\\w+)!" );

  boost::xpressive::smatch what;



  if( boost::xpressive::regex_match( hello, what, rex ) )

  {

    std::cout << what[0] << '\n'; // whole match

    std::cout << what[1] << '\n'; // first capture

    std::cout << what[2] << '\n'; // second capture

  }

}

Here are some detailed examples of Hello Boost.Xpressive, depending on IDE and operating system:

Go back to Richel Bilderbeek's C++ page.

Go back to Richel Bilderbeek's homepage.

(C++) Hello Boost.Xpressive