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 ad95e62e73.
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boost::xpressive::top — top is a lazy PolymorphicFunctionObject for accessing the top element from a stack in an xpressive semantic action.

Synopsis

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

function< op::top >::type const top;

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