go知识重新整理

Go/DesignPattern/bridging/bridging.go

@@ -0,0 +1,72 @@
+package bridging
+
+import "fmt"
+
+//桥接模式：分离抽象部分和是实现部分，使得两部分可以独立变化
+//桥接模式类似于策略模式，区别于策略模式封装一些列算法，使得算法可以相互替换
+
+//将抽象部分SendMessage()与具体的实现部分Send()分离
+
+//抽象部分:SendMessage
+type AbstractMessage interface {
+	SendMessage(text, to string)
+}
+
+//实现部分:Send
+type MessageImplementer interface {
+	Send(text, to string)
+}
+
+//via sms
+func ViaSMS() MessageImplementer {
+	return &MessageSMS{}
+}
+
+type MessageSMS struct {
+}
+
+func (*MessageSMS) Send(text, to string) {
+	fmt.Printf("send %s to %s via SMS", text, to)
+}
+
+//via email
+func ViaEmail() MessageImplementer {
+	return &MessageEmail{}
+}
+
+type MessageEmail struct {
+}
+
+func (MessageEmail) Send(text, to string) {
+	fmt.Printf("send %s to via Email", text, to)
+}
+
+//New commonMessage,method can be SMS or email
+func NewCommonMessage(method MessageImplementer) *CommonMessage {
+	return &CommonMessage{
+		method: method,
+	}
+}
+
+type CommonMessage struct {
+	method MessageImplementer
+}
+
+func (c *CommonMessage) SendMessage(text, to string) {
+	c.method.Send(text, to)
+}
+
+//New UrgencyMessage,method can be SMS or email
+func NewUrgencyMessage(method MessageImplementer) *UrgencyMessage {
+	return &UrgencyMessage{
+		method: method,
+	}
+}
+
+type UrgencyMessage struct {
+	method MessageImplementer
+}
+
+func (u *UrgencyMessage) SendMessage(text, to string) {
+	u.method.Send(fmt.Sprintf("[Urgency] %s", text), to)
+}

Go/DesignPattern/bridging/bridging_test.go

@@ -0,0 +1,27 @@
+/**
+* @Author:zhoutao
+* @Date:2020/12/12 上午9:32
+* @Desc:
+ */
+
+package bridging
+
+func ExampleCommonSMS() {
+	m := NewCommonMessage(ViaSMS())
+	m.SendMessage("sending by sms:have a drink", "boo")
+}
+
+func ExampleCommonEmail() {
+	m := NewCommonMessage(ViaEmail())
+	m.SendMessage("sending by email:have a drink", "boo")
+}
+
+func ExampleUrgencySMS() {
+	m := NewUrgencyMessage(ViaSMS())
+	m.SendMessage("have a drink", "boo")
+}
+
+func ExampleUrgencyEmail() {
+	m := NewUrgencyMessage(ViaEmail())
+	m.SendMessage("have a drink", "boo")
+}