Unable to compile code that writes `std::array<const xyz>` data

[SkyToGround]

See the branch type_trait_issues for an example of this.

[jkotan]

Hi @SkyToGround ,
The solution could be to replace T() by T{} to support type without the default constructor

index dc786ed58..42483c22b 100644
--- a/src/h5cpp/datatype/factory.hpp
+++ b/src/h5cpp/datatype/factory.hpp
@@ -36,14 +36,14 @@ namespace datatype {
 //! \brief factory function for creating data types
 //!
 template<typename T>
-typename TypeTrait<typename std::remove_const<T>::type>::TypeClass create(const T &v = T()) {
+typename TypeTrait<typename std::remove_const<T>::type>::TypeClass create(const T &v = T{}) {
   return TypeTrait<typename std::remove_const<T>::type>::create(v);
 }
 //!
 //! \brief factory function for getting reference of data types
 //!
 template<typename T>
-const Datatype & get(const T &v = T()) {
+const Datatype & get(const T &v = T{}) {
   return TypeTrait<typename std::remove_const<T>::type>::get(v);
 }
 
@@ -64,7 +64,7 @@ class DLL_EXPORT DatatypeHolder
   //! @return data type reference for data type object
   //!
   template<typename T>
-    const Datatype & get(const T & v = T());
+  const Datatype & get(const T & v = T{});
 
  private:
       Datatype instance;

Would you like to create the PR with your tests or shall I do it?

[SkyToGround]

I can do it if that is ok. I should be done with that in an hour or so.

[SkyToGround]

Resolved in PR #601.