错误：'list'不是'std'的成员而且error：template参数2无效

Question

我正在尝试编译我的头文件，但是我遇到了一些我无法弄清楚的错误。

我想创建一个包含3个地图的结构： - 从单个单词到计数的映射 - 从单词对到计数的映射 - 从单个单词到下列单词列表

我的头文件中的代码：

#include <cstdlib>
#include <iostream>
#include <cstring>
#include <string>
#include <cctype>
#include <vector>
#include <algorithm>
#include <map>

typedef struct {

    std::map<std::string, int> firstCounts;
    std::map<std::string, int> pairCounts;
    std::map<std::string, std::list<std::string>> follows; //You can use an iterator to retrieve the values stored in the list. 

} LanguageModel;

我得到的错误：

>   LangModel.h:24:23: error: ‘list’ is not a member of ‘std’
>      std::map<std::string, std::list<std::string>> follows; //You can use an iterator to retrieve the values stored in the list. 
>                            ^
>     LangModel.h:24:23: error: ‘list’ is not a member of ‘std’
>     LangModel.h:24:38: error: template argument 2 is invalid
>      std::map<std::string, std::list<std::string>> follows; //You can use an iterator to retrieve the values stored in the list. 
>                                           ^
>     LangModel.h:24:38: error: template argument 4 is invalid
>     LangModel.h:24:44: error: expected unqualified-id before ‘>’ token
>      std::map<std::string, std::list<std::string>> follows; //You can use an iterator to retrieve the values stored in the list.

Answer 1

您忘了添加

#include <list>    

Answer 2

#include <list>怎么样？您缺少标题包含。