Programming Elixir 1.3

Dates and Times

Elixir 1.3 added a calendar module and four new date and time related types. However, they are currently little more than data holders—look for third-party libraries to add functionality.

The Calendar module represents the rules used to manipulate dates. The only current implementation is Calendar.ISO, the ISO-8601 representation of the Gregorian calendar.^[6]

The Date type holds a year, month, day, and a reference to the ruling calendar.

iex> d1 = Date.new(2016, 12, 25)
{:ok, ~D[2016-12-25]}
iex> {:ok, d1} = Date.new(2016, 12, 25)
{:ok, ~D[2016-12-25]}
iex> d2 = ~D[2016-12-25]
~D[2016-12-25]
iex> d1 == d2
true
iex> d1
~D[2016-12-25]
iex> inspect d1, structs: false
"%{__struct__: Date, calendar: Calendar.ISO, ...