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.

Struct template impl

boost::proto::when<Grammar, >::impl

Synopsis

// In header: <boost/proto/transform/when.hpp>


template<typename Expr, typename State, typename Data> 
struct impl :  
    boost::remove_reference< Data >::type
      ::template when< Grammar >
        ::template impl< Expr, State, Data >
{
};