[英]Member is inaccessible from friend class
我有這樣的聲明
#include "Output/PtPathWriter.h"
// class PtPathWriter // I've also tried forward declaring the friend class
// leg data is a class designed to hold data for a single leg.
class PtPathLeg
{
friend class PtPathWriter; // doesn't work
//friend void PTPathWriter::writeToFile(string fileName, PtPath* path); // works
protected:
vector<map<int, shared_ptr<BoardingStopAlternative>>> m_boarding_stop_alternatives;
// some other stuff
}
但是我從PtPathWriter得到一個錯誤說
PtPathWriter.cpp(44): error #308: member "PtPathLeg::m_boarding_stop_alternatives" (declared at line 79 of "../include/Paths/PtPathLeg.h") is inaccessible
1> path->m_leg_data.at(legnr).m_boarding_stop_alternatives.at(stopId);
有趣的是,如果我使用備用的朋友聲明(明確指定方法),它是否有效? 關於它們為何與眾不同的任何想法?
使用Intel C ++編譯器11.1.065 btw。
您的小t
應該是P**t**PathWriter
的大寫T
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