实现享元模式示例，添加服装、服装工厂和客户类，增强代码可读性
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IvisTang
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package main
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import "fmt"
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/*
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实例：
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汤宝宝开了一家服装租赁店，好多客人来店里租衣服~
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*/
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// 享元对象 - 服装
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type Clothing struct {
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style string
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size string
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color string
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}
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func (c *Clothing) Show() {
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fmt.Printf("服装款式：%s，尺码：%s，颜色：%s\n", c.style, c.size, c.color)
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}
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// 享元工厂 - 服装店
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type ClothingFactory struct {
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clothingPool map[string]*Clothing
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}
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func NewClothingFactory() *ClothingFactory {
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return &ClothingFactory{
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clothingPool: make(map[string]*Clothing),
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}
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}
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func (f *ClothingFactory) GetClothing(style, size, color string) *Clothing {
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key := style + "-" + size + "-" + color
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if clothing, exists := f.clothingPool[key]; exists {
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return clothing
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}
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newClothing := &Clothing{style: style, size: size, color: color}
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f.clothingPool[key] = newClothing
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return newClothing
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}
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func (f *ClothingFactory) ShowStock() {
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fmt.Println("\n服装库存：")
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for key, clothing := range f.clothingPool {
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fmt.Printf("Key: %s -> ", key)
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clothing.Show()
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}
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}
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// 客人
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type Customer struct {
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name string
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clothing []*Clothing
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}
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func NewCustomer(name string) *Customer {
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return &Customer{
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name: name,
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clothing: []*Clothing{},
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}
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}
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func (c *Customer) RentClothing(clothing *Clothing) {
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fmt.Printf("%s 租了一件服装: ", c.name)
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clothing.Show()
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c.clothing = append(c.clothing, clothing)
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}
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func (c *Customer) ShowClothing() {
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fmt.Printf("\n客人%s租赁的服装有：\n", c.name)
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for _, cloth := range c.clothing {
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cloth.Show()
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}
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}
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func main() {
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fmt.Println("============= 享元模式 =============")
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factory := NewClothingFactory()
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// 客人1租衣服
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customer1 := NewCustomer("小红")
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customer1.RentClothing(factory.GetClothing("连衣裙", "M", "红色"))
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customer1.RentClothing(factory.GetClothing("牛仔裤", "L", "蓝色"))
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// 客人2租衣服
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customer2 := NewCustomer("小明")
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customer2.RentClothing(factory.GetClothing("连衣裙", "M", "红色")) // 共享同一件连衣裙
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customer2.RentClothing(factory.GetClothing("西裤", "S", "白色"))
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fmt.Println()
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// 显示租赁情况
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customer1.ShowClothing()
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customer2.ShowClothing()
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// 显示服装库存
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factory.ShowStock()
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fmt.Println()
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fmt.Println("=========== 享元模式结束 ===========")
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}
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@ -0,0 +1,83 @@
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"""
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实例：
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汤宝宝开了一家服装租赁店，好多客人来店里租衣服~
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"""
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class Clothing:
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"""享元对象 - 服装"""
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style: str
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size: str
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color: str
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def __init__(self, style: str, size: str, color: str):
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self.style = style
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self.size = size
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self.color = color
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def show(self):
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print(f"服装款式: {self.style}, 尺码: {self.size}, 颜色: {self.color}")
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class ClothingFactory:
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"""享元工厂 - 服装店"""
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_clothing_pool: dict[str, Clothing]
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def __init__(self):
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self._clothing_pool = {}
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def get_clothing(self, style: str, size: str, color: str) -> Clothing:
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key = f"{style}-{size}-{color}"
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if key not in self._clothing_pool:
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self._clothing_pool[key] = Clothing(style, size, color)
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return self._clothing_pool[key]
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def show_stock(self):
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print("\n服装库存:")
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for key, clothing in self._clothing_pool.items():
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print(f"Keys: {key} -> ", end="")
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clothing.show()
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class Customer:
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name: str
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clothing: list[Clothing]
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def __init__(self, name: str):
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self.name = name
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self.clothing = []
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def rent_clothing(self, clothing: Clothing):
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self.clothing.append(clothing)
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print(f"{self.name} 租了一件服装: ", end="")
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clothing.show()
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def show_clothing(self):
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print(f"\n客人{self.name} 租赁的服装有:")
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for clothing in self.clothing:
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clothing.show()
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if __name__ == "__main__":
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print("============= 享元模式 =============")
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factory = ClothingFactory()
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# 客人1租衣服
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customer1 = Customer("小红")
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customer1.rent_clothing(factory.get_clothing("连衣裙", "M", "红色"))
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customer1.rent_clothing(factory.get_clothing("牛仔裤", "L", "蓝色"))
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# 客人2租衣服
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customer2 = Customer("小明")
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customer2.rent_clothing(factory.get_clothing("连衣裙", "M", "红色"))
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customer2.rent_clothing(factory.get_clothing("西裤", "S", "白色"))
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print()
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# 显示租赁情况
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customer1.show_clothing()
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customer2.show_clothing()
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# 显示服装库存
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factory.show_stock()
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print("\n=========== 享元模式结束 ===========")
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@ -0,0 +1,96 @@
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/*
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实例：
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汤宝宝开了一家服装租赁店，好多客人来店里租衣服~
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*/
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// 享元对象 - 服装
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class Clothing {
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private style: string;
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private size: string;
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private color: string;
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constructor(style: string, size: string, color: string) {
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this.style = style;
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this.size = size;
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this.color = color;
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}
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show() {
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console.log(
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`服装款式: ${this.style}, 尺码: ${this.size}, 颜色: ${this.color}`
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);
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}
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}
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// 享元工厂 - 服装店
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class ClothingFactory {
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private clothingPool: { [key: string]: Clothing };
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constructor() {
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this.clothingPool = {};
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}
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getClothing(style: string, size: string, color: string): Clothing {
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const key = `${style}-${size}-${color}`;
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if (!this.clothingPool[key]) {
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this.clothingPool[key] = new Clothing(style, size, color);
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}
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return this.clothingPool[key];
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}
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showStock() {
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console.log("\n服装库存:");
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for (const key in this.clothingPool) {
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console.log(`Key: ${key} ->`);
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this.clothingPool[key].show();
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}
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}
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}
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// 客人
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class Customer {
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private name: string;
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clothing: Clothing[];
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constructor(name: string) {
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this.name = name;
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this.clothing = [];
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}
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rentClothing(clothing: Clothing) {
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console.log(`${this.name} 租了一件服装.`);
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this.clothing.push(clothing);
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clothing.show();
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}
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showClothing() {
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console.log(`\n客人${this.name}租赁的服装有：`);
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this.clothing.forEach((c) => c.show());
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}
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}
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(function () {
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console.log("============= 享元模式 =============");
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const factory = new ClothingFactory();
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// 客人1租衣服
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const customer1 = new Customer("小红");
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customer1.rentClothing(factory.getClothing("连衣裙", "M", "红色"));
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customer1.rentClothing(factory.getClothing("牛仔裤", "L", "蓝色"));
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// 客人2租衣服
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const customer2 = new Customer("小明");
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customer2.rentClothing(factory.getClothing("连衣裙", "M", "红色")); // 共享同一件连衣裙
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customer2.rentClothing(factory.getClothing("夹克", "XL", "黑色"));
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console.log();
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// 显示租赁情况
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customer1.showClothing();
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customer2.showClothing();
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// 显示服装库存
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factory.showStock();
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console.log("\n=========== 享元模式结束 ===========");
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})();
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