为什么会出现此ifstream错误？ [英] Why am I getting this ifstream error?

问题描述

未定义模板'std :: basic_ifstream< char，std :: char_traits< char>>>'

Implicit instantiation of undefined template 'std::basic_ifstream<char,std::char_traits<char>>'

#ifndef MAPPER_H
#define MAPPER_H
#include <iostream>
#include <string>
#include <vector>
#include "KeyValue.h"
#include "Parser.h"

using namespace std;
class Mapper
{
public:
    Mapper(ifstream& infile);
    ~Mapper(void);
    void loadTokens();
    void showTokens();
    void map();
    void printMap();
    void printMap(string map_fileName);
private:
    ifstream inFile;  //<-- is where the error is happening
    vector<string> tokens;
    vector<KeyValue> map_output;
    Parser* parser;
};

#endif

我什至尝试放入 std :: ifstream 仍然不起作用。

I've even tried putting std::ifstream and it still doesn't work.

当我 #include< fstream> 而不是 #include&ioio> ，我在 fstream.tcc 中得到这些错误，并且 basic_ios.tcc ：

When I #include <fstream> instead of #include <iostream>, I get these errors in fstream.tcc and basic_ios.tcc:

'operator ='是'std的私有成员： ：basic_streambuf< char>'

由于这是fstream库的一部分，显然我正在做的事情是错误的...

And since that's part of the fstream library, obviously something i'm doing is wrong...

有人能帮助吗？

推荐答案

您不见了

#include <fstream>

，您可能会将东西分配给 inFile 不允许。

and you probably assign somthing to inFile which is not allowed.

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