DateTime Format to string?

Questions & Help Questions
5

But that won’t work out of the box, because Calendar is behaviour http://elixir-lang.org/docs/stable/elixir/Calendar.html and without defining callbacks by you or any other model it won’t work.

iex(4)> d = Calendar.DateTime.now! "Africa/Nairobi"
** (UndefinedFunctionError) function Calendar.DateTime.now!/1 is undefined (module Calendar.DateTime is not available)
    Calendar.DateTime.now!("Africa/Nairobi")