构造函数重载包含已定义具有相同签名的成员 [英] Constructor overload contains already defines a member with the same signature

问题描述

public Module(string a, object obj) : this(a, null, obj) { }

public Module(string b, object obj) : this(null, b, obj) { }

这些构造函数重载不起作用

These constructor overloads do not work

已经定义了具有相同参数类型的成员"

'already defines a member with same parameter types'

我环顾四周，意识到我无法在C#中做到这一点，但是任何人都可以提出解决此问题的方法吗?

I have looked around and realise that I cannot do this in c# but can anyone suggest a way around this?

谢谢您的回答.

在这种情况下，我决定暂时使用:

In this case I have decided that to go with this for now:

public Module(string a, object obj) : this(a, null, obj) { }

public Module(string a, string b, object obj) : this(a, b, obj) {}

因此，如果用户想使用b，则必须包括a ...不太好，但是您可以使用

So users will have to include a if they want to use b... not brilliant but there you go

推荐答案

在重载的情况下，参数名称毫无意义.我可以看到您要执行的操作，但不知道为什么.我会完全省掉它:

Parameter names are meaningless in the context of overloads. I can see what you are trying to do, but I'm not sure why. I would dispense with it entirely:

public Module(string a, string b, object obj){}

然后调用 Module 构造函数，并根据需要传入 null 值.

Then call the Module constructor, passing in null values as appropriate.

Module m = new Module(null, "hi", obj);

Module m2 = new Module("bye", null, obj);

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