From b92a3544f524255a8a3a72d9745d972e4346996c Mon Sep 17 00:00:00 2001
From: ibalbaert <ivo.balbaert@telenet.be>
Date: Sat, 30 Nov 2019 09:18:06 +0100
Subject: [PATCH] docs: fix interfaces example

---
 doc/docs.md | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/doc/docs.md b/doc/docs.md
index e7542fef13..59e96ab556 100644
--- a/doc/docs.md
+++ b/doc/docs.md
@@ -885,14 +885,14 @@ interface Speaker {
     speak() string
 }
 
-fn perform(s Speaker) {
-    println(s.speak())
+fn perform(s Speaker) string {
+    return s.speak()
 }
 
 dog := Dog{}
 cat := Cat{}
-perform(dog) // "woof"
-perform(cat) // "meow"
+println(perform(dog)) // "woof"
+println(perform(cat)) // "meow"
 ```
 
 A type implements an interface by implementing its methods.