summary refs log tree commit diff stats
path: root/lib/c++14.h
diff options
context:
space:
mode:
Diffstat (limited to 'lib/c++14.h')
-rw-r--r--lib/c++14.h35
1 files changed, 35 insertions, 0 deletions
diff --git a/lib/c++14.h b/lib/c++14.h new file mode 100644 index 0000000..b3efbe2 --- /dev/null +++ b/lib/c++14.h
@@ -0,0 +1,35 @@
1#include <cstddef>
2#include <memory>
3#include <type_traits>
4#include <utility>
5
6namespace std {
7 template<class T> struct _Unique_if {
8 typedef unique_ptr<T> _Single_object;
9 };
10
11 template<class T> struct _Unique_if<T[]> {
12 typedef unique_ptr<T[]> _Unknown_bound;
13 };
14
15 template<class T, size_t N> struct _Unique_if<T[N]> {
16 typedef void _Known_bound;
17 };
18
19 template<class T, class... Args>
20 typename _Unique_if<T>::_Single_object
21 make_unique(Args&&... args) {
22 return unique_ptr<T>(new T(std::forward<Args>(args)...));
23 }
24
25 template<class T>
26 typename _Unique_if<T>::_Unknown_bound
27 make_unique(size_t n) {
28 typedef typename remove_extent<T>::type U;
29 return unique_ptr<T>(new U[n]());
30 }
31
32 template<class T, class... Args>
33 typename _Unique_if<T>::_Known_bound
34 make_unique(Args&&...) = delete;
35}