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The starting point of JIT production is to minimize waste and make continuous improvement. Waste refers to all activities that cannot create added value. There are seven common waste phenomena in enterprises: waste of excessive production, waste of shutdown for materials, waste of handling methods, waste of processing itself, waste of inventory, waste of action and waste of manufacturing waste and defective products.Public final int calculation (String exp, String opt) {In the above code, we use three functions, order500, order200, orderNormal to handle its own business logic, If the current own function cannot handle things, We pass it to the following function to handle it. By analogy, Until there is a function that can handle him, Otherwise, the responsibility chain mode will leave the chain directly, telling that it cannot be processed and throwing an error prompt. Although the above code can be used as the responsibility chain mode, we can see from the above code that the Order500 function depends on functions such as Order200, so there must be this function, which also violates the open-closed principle in object-oriented. Let's continue to understand writing flexible and detachable responsibility chain nodes.在这个新的迭代和新的世界里，杠杆团队看到了富人和有权势的人继续随心所欲，毫无后果。骗子索菲·德弗雷奥（吉娜·贝尔曼饰）、小偷帕克（贝丝·里斯格拉夫饰）、打手艾略特·斯宾塞（克里斯蒂安·凯恩饰）和黑客亚历克·哈迪森（奥尔迪斯·霍奇饰）在过去八年里目睹了世界的变化，富人变得更富有，而有权的人却要对付那些妨碍他们的人，这变得更容易了，有时甚至是合法的。一集《天河魔剑录》放完，老李坐在电视机前，还有些意犹未尽。The Structure Diagram of Template Method Based on the Example of Cooking in Life