Boost C++ Libraries of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is the documentation for an old version of Boost. Click here to view this page for the latest version.

Global cntrl

boost::xpressive::cntrl — Matches a control character.


// In header: <boost/xpressive/regex_primitives.hpp>

unspecified cntrl;


The regex traits are used to determine which characters are control characters. To match any character that is not a control character, use ~cntrl.