Boost C++ Libraries

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Struct template result

boost::proto::functional::has_env_var::result

Synopsis

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


template<typename Sig> 
struct result {
  // types
  typedef see-below type;
};

Description

Encodes the return type of proto::functional::has_env_var::operator(). The presence of this member template makes proto::functional::has_env_var a valid TR1-style function object type usable with boost::result_of<>.

`result` public types

typedef see-below type;

See proto::functional::has_env_var::operator().