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 _s

boost::xpressive::_s — Matches a space character.


unspecified _s;


'_s' matches a single space character. The regex traits are used to determine which characters are space characters. Use ~_s to match a character that is not a space character.