From 04599ffaa6f13db4c13445a600dc28d0dbc8e0cb Mon Sep 17 00:00:00 2001
From: sunjian126 <sunjian11@jd.com>
Date: Mon, 27 May 2019 14:23:05 +0800
Subject: [PATCH 1/2] add golang code err

---
 golang/array_param.go  |  1 +
 golang/fuck_defer.go   |  1 +
 golang/fuck_recover.go |  1 +
 golang/json_demo.go    | 21 +++++++++++++++++++++
 golang/waht_err.go     |  1 +
 5 files changed, 25 insertions(+)
 create mode 100644 golang/array_param.go
 create mode 100644 golang/fuck_defer.go
 create mode 100644 golang/fuck_recover.go
 create mode 100644 golang/json_demo.go
 create mode 100644 golang/waht_err.go

diff --git a/golang/array_param.go b/golang/array_param.go
new file mode 100644
index 0000000..06ab7d0
--- /dev/null
+++ b/golang/array_param.go
@@ -0,0 +1 @@
+package main
diff --git a/golang/fuck_defer.go b/golang/fuck_defer.go
new file mode 100644
index 0000000..06ab7d0
--- /dev/null
+++ b/golang/fuck_defer.go
@@ -0,0 +1 @@
+package main
diff --git a/golang/fuck_recover.go b/golang/fuck_recover.go
new file mode 100644
index 0000000..06ab7d0
--- /dev/null
+++ b/golang/fuck_recover.go
@@ -0,0 +1 @@
+package main
diff --git a/golang/json_demo.go b/golang/json_demo.go
new file mode 100644
index 0000000..68ff35f
--- /dev/null
+++ b/golang/json_demo.go
@@ -0,0 +1,21 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+func main() {
+
+	newMap := make(map[string]interface{})
+
+	jsonStr := `{
+		"name":"ansj",
+		"age":12
+	}`
+
+	//golang json 序列化只支持指针对象
+	_ = json.Unmarshal([]byte(jsonStr), newMap)
+
+	fmt.Println(newMap)
+}
\ No newline at end of file
diff --git a/golang/waht_err.go b/golang/waht_err.go
new file mode 100644
index 0000000..06ab7d0
--- /dev/null
+++ b/golang/waht_err.go
@@ -0,0 +1 @@
+package main
-- 
Gitee


From 3b222e744a9ad69142bd5759e1f1f6292ed8e1a9 Mon Sep 17 00:00:00 2001
From: sunjian126 <sunjian11@jd.com>
Date: Mon, 27 May 2019 14:23:44 +0800
Subject: [PATCH 2/2] add golang demo

---
 .gitignore             |  3 ++-
 golang/array_param.go  | 16 ++++++++++++++++
 golang/fuck_defer.go   | 16 ++++++++++++++++
 golang/fuck_recover.go | 19 +++++++++++++++++++
 golang/waht_err.go     | 20 ++++++++++++++++++++
 5 files changed, 73 insertions(+), 1 deletion(-)

diff --git a/.gitignore b/.gitignore
index 723ef36..63b7211 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
-.idea
\ No newline at end of file
+.idea
+bullshit-codes.iml
diff --git a/golang/array_param.go b/golang/array_param.go
index 06ab7d0..d0d7963 100644
--- a/golang/array_param.go
+++ b/golang/array_param.go
@@ -1 +1,17 @@
 package main
+
+import "fmt"
+
+
+//from https://books.studygolang.com/advanced-go-programming-book/appendix/appendix-a-trap.html
+func main() {
+	x := [3]int{1, 2, 3}
+
+	//在函数调用参数中，数组是值传递，无法通过修改数组类型的参数返回结果。
+	func(arr [3]int) {
+		arr[0] = 7
+		fmt.Println(arr)
+	}(x)
+
+	fmt.Println(x)
+}
\ No newline at end of file
diff --git a/golang/fuck_defer.go b/golang/fuck_defer.go
index 06ab7d0..335e45c 100644
--- a/golang/fuck_defer.go
+++ b/golang/fuck_defer.go
@@ -1 +1,17 @@
 package main
+
+import "fmt"
+
+var s = 0
+func main() {
+	for i := 0; i < 5; i++ {
+		//正经人不会吧defer写在循环中
+		defer printS()
+		s = i
+	}
+}
+
+func printS() {
+	fmt.Println(s)
+}
+
diff --git a/golang/fuck_recover.go b/golang/fuck_recover.go
index 06ab7d0..4ecc7cb 100644
--- a/golang/fuck_recover.go
+++ b/golang/fuck_recover.go
@@ -1 +1,20 @@
 package main
+
+import "fmt"
+
+var m = 0
+
+func main() {
+	//defer 方法中的参数方法会被执行时候县渲染。 这个时候返回的是0 而不是1
+	defer doSome(getValue())
+	m = 1
+	fmt.Println("end")
+}
+
+func doSome(value int) {
+	fmt.Println(value)
+}
+
+func getValue() int {
+	return m 
+}
diff --git a/golang/waht_err.go b/golang/waht_err.go
index 06ab7d0..6d59461 100644
--- a/golang/waht_err.go
+++ b/golang/waht_err.go
@@ -1 +1,21 @@
 package main
+
+import "fmt"
+
+//参考 https://books.studygolang.com/advanced-go-programming-book/appendix/appendix-a-trap.html
+func main() {
+	fmt.Println(errMehthod())
+}
+
+func errMehthod() (err error) {
+	if err := Bar(); err != nil {
+		//在局部作用域中，命名的返回值内同名的局部变量屏蔽：
+		//这里运行时会报错。编译不报错
+		return
+	}
+	return
+}
+
+func Bar() error {
+	return fmt.Errorf("fuck hongshu")
+}
-- 
Gitee