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interval

0.3.1
2.0.3 2.0.2 2.0.1 2.0.1-alpha.2 2.0.1-alpha.1 2.0.0 2.0.0-alpha.2 2.0.0-alpha.1 1.0.0 0.3.4 0.3.3 0.3.2 retired 0.3.1 retired 0.3.0 0.2.0 0.1.3 0.1.2 0.1.1 0.1.0

Interval/range operations on Decimal, DateTime, Integer, Float, etc. Ecto support for Postgres range types like int4range, daterange, tstzrange, etc. Implement intervals over your own custom data.

Retired package: Release invalid - Package did not compile correctly without Ecto and Postgrex
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interval lib interval date.ex
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lib/interval/date.ex 

if Application.get_env(:interval, Interval.Date, true) do

  defmodule Interval.Date do

    @moduledoc false



    use Interval, type: Date, discrete: true



    if Code.ensure_loaded?(Interval.Support.Ecto) do

      use Interval.Support.Ecto, ecto_type: :daterange

    end



    @spec size(t()) :: integer() | nil

    def size(%__MODULE__{right: :unbounded}), do: nil

    def size(%__MODULE__{left: :unbounded}), do: nil

    def size(%__MODULE__{left: :empty, right: :empty}), do: 0

    def size(%__MODULE__{left: {_, a}, right: {_, b}}), do: Date.diff(b, a)



    @spec point_valid?(Date.t()) :: boolean()

    def point_valid?(a), do: is_struct(a, Date)



    @spec point_compare(Date.t(), Date.t()) :: :lt | :eq | :gt

    defdelegate point_compare(a, b), to: Date, as: :compare



    @spec point_step(Date.t(), integer()) :: Date.t()

    def point_step(%Date{} = date, n) when is_integer(n), do: Date.add(date, n)

  end

end