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Question

我得到這個錯誤：當我嘗試運行此代碼

Severity Code Description Project File Line Suppression State Error C2910 'addingStuff::addingStuffFunc': cannot be explicitly specialized BuckysTemplateSpecialization c:\users\amanuel\documents\visual studio 2015\projects\buckystemplatespecialization\buckystemplatespecializ

：

#include<iostream> 
#include<string> 

template<class F, class S> 
class addingStuff { 
public: 
    addingStuff(F fCons, S sCons) : f(fCons), s(sCons){} 

    F addingStuffFunc(); 

private: 
    F f; S s; 
}; 

template<class F, class S> 
F addingStuff<F, S>::addingStuffFunc() { 
    return(f + s); 
} 

template<> 
class addingStuff<std::string , std::string>{ 
public: 
    addingStuff(std::string sConst, std::string s2Const):s(sConst), s2(s2Const){} 
    std::string addingStuffFunc(); 
private: 
    std::string s, s2; 
}; 

template<> 
std::string addingStuff<std::string, std::string>::addingStuffFunc() { 
    return "Sorry.. Adding strings is Illegal!!"; 
} 

int main() { 
    addingStuff<std::string, std::string> exampleStuff("Hello " , "World"); 
    std::cout << exampleStuff.addingStuffFunc() << std::endl; 
} 

不知道爲什麼..

Answer 1

你只是想：

std::string addingStuff<std::string, std::string>::addingStuffFunc() { 
    return "Sorry.. Adding strings is Illegal!!"; 
} 

額外template <>獲得interp reted作爲成員函數的模板標識，代碼被解釋爲<>的明確標準。但是addingStuffFunc不是函數模板，因此是錯誤。