From 33e4f02ee2586493480d1f19f34842bd6987107d Mon Sep 17 00:00:00 2001
From: xiaox0321 <xiaox0321@163.com>
Date: Tue, 3 Jan 2017 18:29:32 +0800
Subject: [PATCH] Update 22_Protocols.md (#679)
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官方文档的写法是这样的
---
 source/chapter2/22_Protocols.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/chapter2/22_Protocols.md b/source/chapter2/22_Protocols.md
index cd3b1779..2c119533 100644
--- a/source/chapter2/22_Protocols.md
+++ b/source/chapter2/22_Protocols.md
@@ -171,7 +171,7 @@ class LinearCongruentialGenerator: RandomNumberGenerator {
 	let a = 3877.0
 	let c = 29573.0
 	func random() -> Double {
-		lastRandom = ((lastRandom * a + c) % m)
+		lastRandom = ((lastRandom * a + c).truncatingRemainder(dividingBy:m))
 		return lastRandom / m
 	}
 }