Boost C++ Libraries

...one 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 for the latest Boost documentation.
PrevUpHomeNext

Global _d

boost::xpressive::_d — Matches a digit character.

Synopsis

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

unspecified _d;

Description

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

[Note] Note

_d is like \d in perl. ~_d is like \D in perl.


PrevUpHomeNext