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 a snapshot of the develop branch, built from commit dcea408971.
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Global nil

boost::xpressive::nil — Successfully matches nothing.

Synopsis

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

unspecified nil;

Description

Successfully matches a zero-width sequence. nil always succeeds and never consumes any characters.


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