Allow std::vector as target for HDF5 reader

dune/fufem/hdf5/frombuffer.hh

@@ -54,6 +54,14 @@ void fromBuffer(std::vector<ctype> const &buffer, std::array<T, 1> dimensions,
     localVector[0] = *(it++);
 }
 
+template <typename ctype, typename T>
+void fromBuffer(std::vector<ctype> const &buffer, std::array<T, 1> dimensions,
+                std::vector<ctype> &data) {
+  assert(buffer.size() == dimensions[0]);
+
+  data = buffer;
+}
+
 template <typename ctype, typename T>
 void fromBuffer(std::vector<ctype> const &buffer, std::array<T, 0> dimensions,
                 ctype &data) {