Add 13.nix

13.nix

@@ -0,0 +1,8 @@
+let
+  arguments = {a="Happy"; b="Awesome";};
+
+  func = {a, b}: {d, b, c}: a+b+c+d;
+in
+{
+  A = func arguments {c="Are"; b="Functions"; d="Called";}; #only modify this line
+}