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问题描述
我有以下代码实现一个基本的Meyers单例:
I have the following code that implements a basic Meyers singletone:
#ifndef _cConfigFile_HH
#define _cConfigFile_HH
class cConfigFile {
public:
static cConfigFile& getInstance() {
static cConfigFile instance;
return instance;
};
private:
cConfigFile();
};
#endif
我的编译器不允许我编译这个,给出以下错误:
My compiler doesn't allow me to compile this, giving the following error:
/include/cConfigFile.hh:7: undefined reference to `cConfigFile::cConfigFile()'
从错误中我理解我需要在.cpp文件中声明instance要声明cConfigFile :: instance,因为编译器说:
From the error I understand that I need to declare "instance" in a .cpp file, but am unable to declare cConfigFile::instance because the compiler says:
我做错了什么?我在这里失踪了。
What am I doing wrong?? I'm lost here..
推荐答案
您忘了实现你的构造函数。
You forgot to implement your constructor.
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