go知识重新整理

Go/DesignPattern/state/state.go

@@ -0,0 +1,111 @@
+/**
+* @Author:zhoutao
+* @Date:2020/12/12 下午2:16
+* @Desc:
+ */
+
+package state
+
+import "fmt"
+
+//状态模式：用于分离 状态和行为
+
+type Week interface {
+	Today()
+	Next(*DayContext)
+}
+
+//
+func NewTodayContext() *DayContext {
+	return &DayContext{
+		today: &Sunday{},
+	}
+}
+
+type DayContext struct {
+	today Week
+}
+
+func (d *DayContext) Today() {
+	d.today.Today()
+}
+
+func (d *DayContext) Next() {
+	d.today.Next(d)
+}
+
+//sunday
+type Sunday struct {
+}
+
+func (*Sunday) Today() {
+	fmt.Print("sunday\n")
+}
+
+func (*Sunday) Next(ctx *DayContext) {
+	ctx.today = &Monday{}
+}
+
+//Monday
+type Monday struct {
+}
+
+func (*Monday) Today() {
+	fmt.Print("Monday\n")
+}
+
+func (*Monday) Next(ctx *DayContext) {
+	ctx.today = &Tuesday{}
+}
+
+//Tuesday
+type Tuesday struct {
+}
+
+func (*Tuesday) Today() {
+	fmt.Print("Tuesday\n")
+}
+
+func (*Tuesday) Next(ctx *DayContext) {
+	ctx.today = &Wednesday{}
+}
+
+type Wednesday struct{}
+
+func (*Wednesday) Today() {
+	fmt.Printf("Wednesday\n")
+}
+
+func (*Wednesday) Next(ctx *DayContext) {
+	ctx.today = &Thursday{}
+}
+
+type Thursday struct{}
+
+func (*Thursday) Today() {
+	fmt.Printf("Thursday\n")
+}
+
+func (*Thursday) Next(ctx *DayContext) {
+	ctx.today = &Friday{}
+}
+
+type Friday struct{}
+
+func (*Friday) Today() {
+	fmt.Printf("Friday\n")
+}
+
+func (*Friday) Next(ctx *DayContext) {
+	ctx.today = &Saturday{}
+}
+
+type Saturday struct{}
+
+func (*Saturday) Today() {
+	fmt.Printf("Saturday\n")
+}
+
+func (*Saturday) Next(ctx *DayContext) {
+	ctx.today = &Sunday{}
+}

Go/DesignPattern/state/state_test.go

@@ -0,0 +1,20 @@
+/**
+* @Author:zhoutao
+* @Date:2020/12/12 下午2:53
+* @Desc:
+ */
+
+package state
+
+func ExampleWeek() {
+	ctx := NewTodayContext()
+	todayAndNext := func() {
+		ctx.Today()
+		ctx.Next()
+	}
+
+	for i := 0; i < 8; i++ {
+		todayAndNext()
+	}
+
+}