📅  最后修改于: 2022-03-11 15:02:22.086000             🧑  作者: Mango
Customer(this.name, this.age, this.location);
Customer.withoutLocation(this.name, this.age);
Customer.empty() {
name = "";gd
location = "";
}
cfgdfgdfgdfggdfgdfdfgdfgdggdfgdfgdf