Horizon
optional.h
1 # ifndef ___OPTIONAL_H___
2 # define ___OPTIONAL_H___
3 
4 #include <boost/optional.hpp>
5 
6 template<typename T>
7 using OPT = boost::optional<T>;
8 
9 const auto NULLOPT = boost::none;
10 
11 # endif //___OPTIONAL_HPP___