无论使用基类还是继承类，都执行操作符

Question

这是一些看起来像我目前正在使用的类。

public class SomeClass
{
    public PropertyAClass A { get; set;}
    public PropertyBClass B { get; set;}
    public SomeClass (PropertyAClass A, PropertyBClass B)
    {
        this.A = A;
        this.B = B;
    }
    public static SomeClass operator +(SomeClass a, SomeClass b)
    {
        return new SomeClass(a.A + b.A, a.b + b.B);
    }
}
public class DerivedClass : SomeClass
{
    public DerivedClass (PropertyADerivedClass A, PropertyBDerivedClass B) : base(A,B)
    {
    }
    //Operation is the same but I have to repeat the method
    public static DerivedClass operator +(DerivedClass a, DerivedClass b)
    {
        return new DerivedClass(a.A + b.A, a.b + b.B);
    }
}

是否有一些聪明的方法，可以使它不重复操作符+在派生类中通过应用它到基类，仍然得到派生类作为输出?

Answer 1

我现在没有c#编译器，但我试着用心写一些东西。尝试使用泛型类型参数，类似于:

using System;
using System.Reflection;
public class SomeClass<T>
{
    public PropertyAClass A { get; set;}
    public PropertyBClass B { get; set;}
    public SomeClass (PropertyAClass A, PropertyBClass B)
    {
        this.A = A;
        this.B = B;
    }
    public static T operator +(T a, T b)
    {
        return new T(a.A + b.A, a.b + b.B);
    }
}
public class DerivedClass : SomeClass<DerivedClass>
{
    public DerivedClass (PropertyADerivedClass A, PropertyBDerivedClass B) : base(A,B)
    {
    }
}

也许有帮助:

传递实例化的系统。作为泛型类的类型参数的类型

http://www.dotnetperls.com/generic

https://msdn.microsoft.com/en-us/library/ms379564 (v = vs.80) . aspx