I forgot replying to this comment and seeing it just now after a week.

Your presence is welcome on all posts, no matter you are familiar with the subject or not. The homeworks are though quite time taking but very interesting and a good way to refresh the concepts, for free.

I haven't been to any rooftop restaurants in the hometown before, so it was a nice change plus the food was awesome.

Thank you for your kind words and warm presence online and offline too. 😀