#pragma once // GNU 5.4.0 doesn't have std::make_unique in -std=c++14 mode // this implementation was taken from http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3656.htm #include <memory> #include <utility> #include <cstddef> namespace raii_detail { template<class T> struct Unique_if { typedef std::unique_ptr<T> Single_object; }; template<class T> struct Unique_if<T[]> { typedef std::unique_ptr<T[]> Unknown_bound; }; template<class T, size_t N> struct Unique_if<T[N]> { typedef void Known_bound; }; } template<class T, class... Args> typename ::raii_detail::Unique_if<T>::Single_object make_unique(Args&&... args) { return std::unique_ptr<T>(new T(std::forward<Args>(args)...)); } template<class T> typename ::raii_detail::Unique_if<T>::Unknown_bound make_unique(std::size_t n) { typedef typename std::remove_extent<T>::type U; return std::unique_ptr<T>(new U[n]()); } template<class T, class... Args> typename ::raii_detail::Unique_if<T>::Known_bound make_unique(Args&&...) = delete;