'std :: map'：'SomeClass'不是参数'_Ty'的有效模板类型参数

I currently have a class that looks like the following .

我目前有一个类如下所示。

#define SET_METHOD( t , n ) \
private:    t n;    \
public:     void set_##n(  t value ) {  n = value; }

    class SomeClass
    {

        private: 
                    SET_METHOD(std::map<int,SomeClass>,hf);
    };

However when I do something like this :

但是,当我做这样的事情时:

SomeClass sc;
hc.AddItem(1,sc);

I get the following error. I have also these macros for setting up getters and setters but this time I dont know what the problem is. I am getting the following error

我收到以下错误。我还有这些用于设置getter和setter的宏,但这次我不知道问题是什么。我收到以下错误

Error   3   error C2923: 'std::map' : 'SomeClass' is not a valid template type argument for parameter '_Ty' 
Error   4   error C2208: 'std::map<_Kty,_Ty>' : no members defined using this type

Any suggestion on how to resolve this issue would be appreciated

任何有关如何解决此问题的建议将不胜感激

2 个解决方案

#1

I believe the , in the definition std::map<int,SomeClass> is confusing the C++ pre-processor.

我相信,在定义std :: map 中混淆了C ++预处理器。 ,someclass>

Drop the macros and define your setters/getters by hand.

放下宏并手动定义你的setter / getters。

Alternatively create a typedef:

或者创建一个typedef:

typedef std::map<int,SomeClass> MyMap;

and use:

IMPLEMENT_SET_GET_METHOD(MyMap,hf);

#2

Is there a conversion from HistoricalFields type to SomeClass type? You are also trying to define your class member in terms of class itself which leads to to a chicken/egg problem (you a trying to define a member which is a collection containig the outer class itself).

是否有从HistoricalFields类型到SomeClass类型的转换?你也试图用类本身来定义你的类成员,这会导致鸡/蛋问题(你试图定义一个成员,它是一个包含外部类本身的集合)。

#1