designpatterns/factory/cash_factory.go

package factory

func CreateCashAccept(t int) Casher {
	var cash Casher
	switch t {
	case 1: //正常
		cash = new(CashNormal)
	case 2: //8折
		cash = &CashRebate{MoneyRebate: 0.8}
	case 3: //满300减50
		cash = &CashReturn{MoneyCondition: 300, MoneyReturn: 50}
	default:
	}
	return cash
}