The abstract factory pattern is used to provide a client with a set of r...

The builder pattern is used to create complex objects with constituent p...

🏭 Factory Method The factory pattern is used to replace class constructo...

创建一个新的对象，然后通过复制现有的对象，称为原型。原型本身使用模板创建，后续实例是克隆模板产生的。

单利