From e1bced23458e287cb9dacb368b944e4755d2d9d8 Mon Sep 17 00:00:00 2001
From: Ben Motz <ben.motz@kaluza.com>
Date: Tue, 30 Nov 2021 12:47:13 +0000
Subject: [PATCH] Add missing import

Without this import the example code fails with "error: value map is not
a member of Tree[Int]".
---
 src/pages/functors/cats.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/pages/functors/cats.md b/src/pages/functors/cats.md
index 3ae4835c..b872339e 100644
--- a/src/pages/functors/cats.md
+++ b/src/pages/functors/cats.md
@@ -218,6 +218,7 @@ with the same pattern of `Branch` and `Leaf` nodes:
 
 ```scala mdoc:silent
 import cats.Functor
+import cats.syntax.functor._     // for map
 
 implicit val treeFunctor: Functor[Tree] =
   new Functor[Tree] {