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构建者模式(Builder pattern)
2020-11-08 15:22:00 【程序猿欧文】
构建者模式应用场景:
主要用来构建一些复杂对象,这里的复杂对象比如说:在建造大楼时,需要先打牢地基,搭建框架,然后自下向上地一层一层盖起来。通常,在建造这种复杂结构的物体时,很难一气呵成。我们需要首先建造这个物体的各个部分,然后分阶段将他们组合起来。那么现在就出现了构建者模式:构建者模式由Builder(建造者)和Director(指挥者)组成。请看如下的UML图:
Builder类
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https://my.oschina.net/mikeowen/blog/4708220
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