[cleanup]Replace Dune::Std::apply by std::apply

dune/fufem/assemblers/localassemblers/secondorderoperatorassembler.hh

@@ -9,7 +9,6 @@
 #include <dune/common/fvector.hh>
 #include <dune/common/fmatrix.hh>
 #include <dune/common/hybridutilities.hh>
-#include <dune/common/std/apply.hh>
 #include <dune/common/concept.hh>
 
 #include <dune/istl/matrix.hh>
@@ -38,7 +37,7 @@ namespace Concept {
 
         template<class F>
         auto require(F&& f) -> decltype(
-            Dune::Std::apply(f, args)
+            std::apply(f, args)
         );
     };
 
@@ -54,7 +53,7 @@ namespace Concept {
 
         template<class F>
         auto require(F&& f) -> decltype(
-            Dune::MatrixVector::addProduct(r, s, Dune::Std::apply(f, args))
+            Dune::MatrixVector::addProduct(r, s, std::apply(f, args))
         );
     };
 
@@ -255,7 +254,7 @@ public:
                     };
                     Dune::MatrixVector::addProduct(
                         localMatrix[i][j], z,
-                        Dune::Std::apply(boundContraction, returnValues));
+                        std::apply(boundContraction, returnValues));
                 }
             }
         }

dune/fufem/python/common.hh

@@ -12,9 +12,9 @@
 #include <string>
 #include <sstream>
 #include <type_traits>
+#include <tuple>
 
 #include <dune/common/exceptions.hh>
-#include <dune/common/std/apply.hh>
 
 #include <dune/functions/common/signature.hh>
 #include <dune/functions/common/differentiablefunctionfromcallables.hh>
@@ -570,7 +570,7 @@ auto makeDifferentiableFunction(const R&... f)
     auto signatureTag = Dune::Functions::SignatureTag<Signature, DerivativeTraits>();
     auto derivativeSignatureTags = Dune::Functions::derivativeSignatureTags<sizeof...(f)-1>(signatureTag);
 
-    return Dune::Std::apply([&f..., &signatureTag](auto... tag) {
+    return std::apply([&f..., &signatureTag](auto... tag) {
             return Dune::Functions::makeDifferentiableFunctionFromCallables(signatureTag,
                 makeFunction<typename decltype(tag)::Signature>(f)...);
         }, derivativeSignatureTags);