Merge branch 'feature/apply_for_variadic' into 'master'

extend apply and for_each functions

See merge request !43

src/amdis/common/Apply.hpp

@@ -41,6 +41,13 @@ namespace AMDiS
       return apply(FWD(f), std::forward_as_tuple(args...));
     }
 
+    template <std::size_t N, class Functor>
+    constexpr decltype(auto) apply_indices(Functor&& f)
+    {
+      return Impl_::apply_indices_impl(FWD(f), index_t<0>{},
+          std::make_index_sequence<N>{});
+    }
+
     template <class Functor, std::size_t N>
     constexpr decltype(auto) apply_indices(Functor&& f, index_t<N>)
     {

src/amdis/common/ForEach.hpp

@@ -15,6 +15,16 @@ namespace AMDiS
       void ignored_evaluation(std::initializer_list<T>&&) { /* do nothing */ }
     }
 
+    template <class Functor, class... Args>
+    constexpr void for_variadic(Functor&& f, Args&&... args)
+    {
+#if AMDIS_HAS_CXX_FOLD_EXPRESSIONS
+      (f(FWD(args)),...);
+#else
+      Impl_::ignored_evaluation<int>({0, (f(FWD(args)), 0)...});
+#endif
+    }
+
     template <std::size_t... I, class Tuple, class Functor>
     constexpr void for_each(std::index_sequence<I...>, Tuple&& tuple, Functor&& f)
     {