From cd9088a8f03770bd6100b1ea89cff8834c270475 Mon Sep 17 00:00:00 2001
From: James Robey <james.robey@gmail.com>
Date: Wed, 19 Aug 2020 12:16:39 +0700
Subject: [PATCH] Fix warning for deprecated Range.range?/1

---
 lib/koans/03_numbers.ex | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/lib/koans/03_numbers.ex b/lib/koans/03_numbers.ex
index 4bed3b9..fdfdcb5 100644
--- a/lib/koans/03_numbers.ex
+++ b/lib/koans/03_numbers.ex
@@ -123,8 +123,11 @@ defmodule Numbers do
     assert 0 in range == ___
   end
 
+  def is_range?(%Range{}), do: true
+  def is_range?(_), do: false
+
   koan "Is this a range?" do
-    assert Range.range?(1..10) == ___
-    assert Range.range?(0) == ___
+    assert is_range?(1..10) == ___
+    assert is_range?(0) == ___
   end
 end