重构享元模式示例，统一服装接口类型，增强代码一致性和可读性

go/flyweight/main.go

@@ -7,6 +7,11 @@ import "fmt"
 汤宝宝开了一家服装租赁店，好多客人来店里租衣服~
 */
 
+// 享元抽象类
+type ClothingInterface interface {
+	Show()
+}
+
 // 享元对象 - 服装
 type Clothing struct {
 	style string
@@ -20,16 +25,16 @@ func (c *Clothing) Show() {
 
 // 享元工厂 - 服装店
 type ClothingFactory struct {
-	clothingPool map[string]*Clothing
+	clothingPool map[string]ClothingInterface
 }
 
 func NewClothingFactory() *ClothingFactory {
 	return &ClothingFactory{
-		clothingPool: make(map[string]*Clothing),
+		clothingPool: make(map[string]ClothingInterface),
 	}
 }
 
-func (f *ClothingFactory) GetClothing(style, size, color string) *Clothing {
+func (f *ClothingFactory) GetClothing(style, size, color string) ClothingInterface {
 	key := style + "-" + size + "-" + color
 	if clothing, exists := f.clothingPool[key]; exists {
 		return clothing
@@ -50,17 +55,17 @@ func (f *ClothingFactory) ShowStock() {
 // 客人
 type Customer struct {
 	name     string
-	clothing []*Clothing
+	clothing []ClothingInterface
 }
 
 func NewCustomer(name string) *Customer {
 	return &Customer{
 		name:     name,
-		clothing: []*Clothing{},
+		clothing: []ClothingInterface{},
 	}
 }
 
-func (c *Customer) RentClothing(clothing *Clothing) {
+func (c *Customer) RentClothing(clothing ClothingInterface) {
 	fmt.Printf("%s 租了一件服装: ", c.name)
 	clothing.Show()
 	c.clothing = append(c.clothing, clothing)