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Differences between simple factories and factory methods: Simple factories and factory method patterns look very similar, especially specific factories in simple factories and factory methods. Simple factory, all things have been done in one place. However, the factory method creates a framework for subclasses to decide how to implement it. For example, in the factory method, the OrderPizza method creates a general framework to create pizza. The OrderPizza method relies on the factory method to create specific classes and make actual pizza. It is possible to decide what the actual products manufactured are by inheriting the factory. Simple factories do not have this flexibility.Bridging Mode:韩信沉默了许多，才说道：好，那我什么时候才能离开刘邦，回到越国？尹旭道：出巴蜀，定三秦，出函谷关，大军东进之时。(4) At the end or near the end of the last tugboat or object, a rhombus type is displayed. If the towing length exceeds 200m, an additional rhombus type is added at the most visible place at the front as far as possible.Standard无奈之下，郭靖把杨过送到全真派去学武。　　鸫虽有一丝犹豫，但最终决定参与“鸱鸺”，展开对“稀有之物”的调查活动。