Tomohiro Ichinose

Thanks for your reply :smiley: I'm sorry, I didn't explain enough. You're right, traits are NOT implementation detail. Compile-time errors are much better than runtime errors. However, I think `AfFloat`...

Question 2. was about implementation of `Convertable` using generics, not macros for each types. I wrote that and send PR. I don't know so much about type safety in `arrayfire`...