From 453d3512f1a3b244e3c4121b2a81a2b04cd77a39 Mon Sep 17 00:00:00 2001
From: Steven Vandevelde <icid.asset@gmail.com>
Date: Wed, 13 Jun 2018 23:37:40 +0200
Subject: [PATCH 1/2] Allow Algae.Maybe.new to return a Nothing based on option

---
 lib/algae/maybe.ex | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/lib/algae/maybe.ex b/lib/algae/maybe.ex
index 89b83a9..d8b8a3c 100644
--- a/lib/algae/maybe.ex
+++ b/lib/algae/maybe.ex
@@ -54,9 +54,24 @@ defmodule Algae.Maybe do
       iex> new(9)
       %Algae.Maybe.Just{just: 9}
 
+      iex> new(nil)
+      %Algae.Maybe.Just{just: nil}
+
+      iex> new(nil, nothing: nil)
+      %Algae.Maybe.Nothing{}
+
+      iex> new(9, nothing: 9)
+      %Algae.Maybe.Nothing{}
+
+      iex> new(9, nothing: 1)
+      %Algae.Maybe.Just{just: 9}
+
   """
-  @spec new(any) :: Just.t()
-  defdelegate new(value), to: Just, as: :new
+  @spec new(any(), [nothing: any()]) :: Just.t() | Nothing.t()
+  def new(nothing_value, [nothing: nothing_value]), do: Nothing.new()
+  def new(value, _), do: Just.new(value)
+
+  def new(value), do: Just.new(value)
 
   @doc """
   Extract a value from a `Maybe`, falling back to a set value in the `Nothing` case.

From e0335356f722964ec5cd15176e6036f083b7425a Mon Sep 17 00:00:00 2001
From: Steven Vandevelde <icid.asset@gmail.com>
Date: Wed, 27 Jun 2018 23:18:24 +0200
Subject: [PATCH 2/2] Add Maybe.from_nillable

---
 lib/algae/maybe.ex | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/lib/algae/maybe.ex b/lib/algae/maybe.ex
index d8b8a3c..32c8b44 100644
--- a/lib/algae/maybe.ex
+++ b/lib/algae/maybe.ex
@@ -71,8 +71,24 @@ defmodule Algae.Maybe do
   def new(nothing_value, [nothing: nothing_value]), do: Nothing.new()
   def new(value, _), do: Just.new(value)
 
+  @spec new(any()) :: Just.t()
   def new(value), do: Just.new(value)
 
+  @doc """
+  Alias for `new(value, nothing: nil)`.
+
+  ## Examples
+
+      iex> from_nillable(9)
+      %Algae.Maybe.Just{just: 9}
+
+      iex> from_nillable(nil)
+      %Algae.Maybe.Nothing{}
+
+  """
+  @spec from_nillable(any()) :: Just.t()
+  def from_nillable(value), do: new(value, nothing: nil)
+
   @doc """
   Extract a value from a `Maybe`, falling back to a set value in the `Nothing` case.