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The template method pattern defines the algorithm skeleton in an operation in an abstract class and delays the implementation of some specific steps to subclasses. The template method enables subclasses to redefine specific steps of the algorithm without changing the structure of the algorithm, thus achieving the effect of reusing codes. The specific structure diagram is shown below.After studying the design pattern during this period of time, I still have a lot of feelings, because when I am writing code now, I often think about whether I can use any design pattern to refactor here. Therefore, after learning the design pattern, I feel that it will slowly affect the way you think about writing code. Here is a summary of the design patterns. First, all the design patterns can be sorted out. Second, an index can be made to help everyone collect.Color deepening mode. The color of the bottom layer is darken, which is somewhat similar to the bottom layer of the positive film stack, but the difference is that it will increase the contrast of the bottom layer according to the color of the superimposed pixels. Mixing with white has no effect.秦枫看着小女娃，想起她往日的乖巧精明，常把人哄得团团转，还乐得眉开眼笑，不禁心中一酸。麻美（京野ことみ饰）对Pizza送货员山下（池内博之饰）一见钟情，开始在网页上留下爱的宣言，打电话给他，最后还跟踪到他家向他表白。For those who want to improve their thinking ability, it is a shortcut to exercise their classification ability. When you can classify things effectively, you will find that complicated things are not complicated but can be very simple, and most of the problems without ideas and methods are actually known to you. However, this kind of exercise is not easy and requires hard work and training.