关于golang:设计模式的GO实现

随性施展

abstract factory pattern

type IProduct interface {    show()}type ProductEntity struct {}func (product *ProductEntity) show(){    fmt.Println("product entity")}type IFactory interface {    createProduct()(product *ProductEntity)}type Factory struct {}func (factory *Factory) createProduct() (product *ProductEntity) {    product = new(ProductEntity)    return product}func main() {    factory := new (Factory)    factory.createProduct().show()}

observer pattern

type Customer interface {    update()}type CustomerEntity struct {}func (*CustomerEntity) update() {    fmt.Println("message accepted")}type Producer struct {    customers []Customer}func (p *Producer) addCustomer(entity *CustomerEntity) {    p.customers = append(p.customers, entity)}func (p Producer) deleteCustomer(entity *CustomerEntity) {    // TODO}func (p *Producer) notify() {    for _, customer := range p.customers {        customer.update()    }}