From 41e94748ce12b0a90199d9396e0f80ae5c108c22 Mon Sep 17 00:00:00 2001
From: Bo-Yi Wu <appleboy.tw@gmail.com>
Date: Mon, 28 Mar 2016 11:00:00 +0800
Subject: [PATCH 1/2] fix value undefined error.

---
 eBook/17.1.md | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/eBook/17.1.md b/eBook/17.1.md
index 5d6e8eb..6985293 100644
--- a/eBook/17.1.md
+++ b/eBook/17.1.md
@@ -9,8 +9,6 @@ if value, err := pack1.Func1(param1); err != nil {
     fmt.Printf(“Error %s in pack1.Func1 with parameter %v”, err.Error(), param1)
     return err
 }
-// 函数Func1没有错误:
-Process(value)
 
 e.g.: os.Open(file) strconv.Atoi(str)
 ```
@@ -73,4 +71,4 @@ if value, ok := varI.(T); ok {
 
 - [目录](directory.md)
 - 上一节：[模式](17.0.md)
-- 下一节：[关于defer模式](17.2.md)
\ No newline at end of file
+- 下一节：[关于defer模式](17.2.md)

From a86716fd785ce52f49f5bc9667e7e2cba948d331 Mon Sep 17 00:00:00 2001
From: Bo-Yi Wu <appleboy.tw@gmail.com>
Date: Mon, 28 Mar 2016 12:56:39 +0800
Subject: [PATCH 2/2] Fix code

---
 eBook/17.1.md | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/eBook/17.1.md b/eBook/17.1.md
index 6985293..c6ad534 100644
--- a/eBook/17.1.md
+++ b/eBook/17.1.md
@@ -5,11 +5,16 @@
 （1）在函数返回时检测错误（参考[第5.2小节](05.2.md)）:
 
 ```go
-if value, err := pack1.Func1(param1); err != nil {
+value, err := pack1.Func1(param1)
+
+if err != nil {
     fmt.Printf(“Error %s in pack1.Func1 with parameter %v”, err.Error(), param1)
     return err
 }
 
+// 函数Func1没有错误:
+Process(value)
+
 e.g.: os.Open(file) strconv.Atoi(str)
 ```