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Calendar is a datetime library for Elixir. Timezone support via its sister package `tzdata`. Safe parsing and formatting of standard formats (ISO, RFC, etc.), strftime formatting. Extendable through protocols.

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calendar lib calendar time format.ex
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lib/calendar/time/format.ex 

defmodule Calendar.Time.Format do

  alias Calendar.Strftime



  @doc """

  Format a time as ISO 8601 extended format



  ## Examples



      iex> Calendar.Time.from_erl!({20, 5, 18}) |> Calendar.Time.Format.iso8601

      "20:05:18"

  """

  def iso8601(time) do

    time

    |> contained_time

    |> Strftime.strftime!("%H:%M:%S")

  end



  @doc """

  Format as ISO 8601 Basic



  # Examples



      iex> Calendar.Time.from_erl!({20, 10, 20}) |> Calendar.Time.Format.iso_8601_basic

      "201020"



  """

  def iso_8601_basic(time) do

    time = time |> contained_time

    Strftime.strftime!(time, "%H%M%S")

  end



  defp contained_time(time_container) do

    Calendar.ContainsTime.time_struct(time_container)

  end

end