From a52453ed54c7a4f119536db5997c4826a4eccd4b Mon Sep 17 00:00:00 2001
From: Nathan Mattes <hallo@bullenscheisse.de>
Date: Thu, 16 Sep 2021 17:00:38 +0200
Subject: [PATCH] Implement a simple version of flatten

---
 maps/myenum.exs | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/maps/myenum.exs b/maps/myenum.exs
index 2cbd775..e6955cb 100644
--- a/maps/myenum.exs
+++ b/maps/myenum.exs
@@ -45,6 +45,23 @@ defmodule MyEnum do
     end
   end
 
+  # I gave up on these two.
   # split
   # take
 end
+
+defmodule MyList do
+	def flatten([]) do
+		[]	
+	end
+		
+	def flatten([head|tail]) do
+		# this is basically the recursion
+		flatten(head) ++ flatten(tail)
+	end
+	
+	def flatten(head) do
+		# if there's only on element, we make a list out of it, so that we can concat them
+		[head]
+	end
+end