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  • 浅谈外观模式

    外观模式,我的理解就是模块封装。比如要实现A类,需要BCD三个类,客户调用A类成员函数,A类调用BCD。对应客户看不到bcd,只能看到A,因此成为外观模式。这里理解为关联关系。

    //复杂或多对象
    class objectOne
    {
      public void operator() 
      {
        cout<<"operator one
    ";
      }
    }
    class objectTwo
    {
      public void operator() 
      {
        cout<<"operator two
    ";
      }
    }
    class objectThree
    {
      public void operator() 
      {
        cout<<"operator three
    ";
      }
    }
    class objectFour
    {
      public void operator() 
      {
        cout<<"operator four
    ";
      }
    }
    //外观实现
    class Facade
    {
      objectOne one;
      objectTwo two;
      objectThree three;
      objectFour four;
    
      public Facade() 
      {
        obj1 = new objectOne();
        obj2 = new objectTwo();
        obj3 = new objectThree();
        obj4 = new objectFour();
      }
      public void MethodA() 
      {
        cout<<" Fun A()-----
    ");
        obj1.operator();
        obj2.operator();
        obj3.operator();
        obj4.operator();
      }
      public void MethodB() 
      {
        cout<<" Fun B()-----
    ");
        obj4.operator();
        obj3.operator();
        obj2.operator();
        obj1.operator();
      }
    }
    //调用
    void main() 
    {
      Facade facade = new Facade();
      facade.MethodA();
      facade.MethodB();
    }
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  • 原文地址:https://www.cnblogs.com/jylz/p/10648338.html
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