Merge pull request #394 from leapmotion/fix-is_constructable

Add 'is_constructable' to shim
leapmotion · Feb 4, 2015 · a386354 · a386354
2 parents f8557c6 + 235219b
commit a386354
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/autowiring/C++11/boost_type_traits.h b/autowiring/C++11/boost_type_traits.h
@@ -53,4 +53,15 @@ namespace std {
   {
     typedef _Type type;
   };
+
+  template<class T, class... Args>
+  struct is_constructible {
+    template<class U>
+    static std::true_type select(decltype(U(*static_cast<typename remove_reference<Args>::type*>(nullptr)...))*);
+
+    template<class U>
+    static std::false_type select(...);
+
+    static const bool value = decltype(select<T>(static_cast<T*>(nullptr)))::value;
+  };
 }