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 an older version of Boost and was released in 2013. The current version is 1.89.0.

Class template is_reference_wrapper

Class template is_reference_wrapper

boost::is_reference_wrapper — Determine if a type T is an instantiation of reference_wrapper.

Synopsis

// In header: <boost/ref.hpp>

template<typename T> 
class is_reference_wrapper {
public:
  // static constants
  static const bool value = unspecified;
};

Description

The value static constant will be true iff the type T is a specialization of reference_wrapper.