From 0247488f7a8e8a7dc763c2fb353fdeb45310c2b7 Mon Sep 17 00:00:00 2001
From: Changkun Ou <hi@changkun.us>
Date: Sat, 28 Apr 2018 10:51:52 +0200
Subject: [PATCH] resolve #26, typo in return

---
 book/zh-cn/02-usability.md | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/book/zh-cn/02-usability.md b/book/zh-cn/02-usability.md
index 947e36b..8a149b4 100644
--- a/book/zh-cn/02-usability.md
+++ b/book/zh-cn/02-usability.md
@@ -452,9 +452,7 @@ std::cout << "q: " << q << std::endl;
 简单来说，`decltype(auto)` 主要用于对转发函数或封装的返回类型进行推导，它使我们无需显式的指定 `decltype` 的参数表达式。考虑看下面的例子，当我们需要对下面两个函数进行封装时：
 
 ```cpp
-std::string  lookup1(std::string &str) {
-	return 
-}
+std::string  lookup1();
 std::string& lookup2();
 ```