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StrBlob.h 头文件报错 #73

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kagtag opened this issue Jul 31, 2017 · 1 comment

kagtag commented Jul 31, 2017

参考文件为 https://github.com/Mooophy/Cpp-Primer/blob/master/ch15/ex15.34.35.36.38/StrBlob.h
运行系统为windows 7 professional
IDE为 Visual Studio 2015 professional

出现了两个错误

StrBlob类的两个成员函数 StrBlobPtr bebin()和 StrBlobPtr end()在类外定义处报错
Declaration is incompatible with StrBlobPtr StrBlob::begin()
Declaration is incompatible with StrBlobPtr StrBlob::end()
StrBlobPtr类中构造函数无法访问StrBlob类私有成员data
StrBlobPtr(const StrBlob &a, const size_t sz=0):wptr(a.data),curr(sz){}
报错信息为
member StrBlob::data declared at .... is inaccessible.

ender233 commented Jun 11, 2018

使用类型的时候需要知道其定义(类结构)，只有使用类指针的时候前置声明就够用了(class Type)
辅助理解: https://stackoverflow.com/questions/16440661/declaration-is-incompatible-with-type

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