From dcc70e17821f71303367064e47e40a4552e356bb Mon Sep 17 00:00:00 2001
From: TheLittleBoy <TheLittleBoy@users.noreply.github.com>
Date: Sun, 29 Jun 2014 22:32:14 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BB=A3=E7=A0=81=E7=BC=96=E5=86=99=E9=94=99?=
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代码中少写了一个空格，导致编译错误。  特此修正
---
 source/chapter2/21_Protocols.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/chapter2/21_Protocols.md b/source/chapter2/21_Protocols.md
index e1173fce..2913eb9a 100755
--- a/source/chapter2/21_Protocols.md
+++ b/source/chapter2/21_Protocols.md
@@ -230,7 +230,7 @@ class Dice {
 		self.generator = generator
 	}
 	func roll() -> Int {
-		return Int(generator.random() * Double(sides)) +1
+		return Int(generator.random() * Double(sides)) + 1
 	}
 }
 ```