stdext :: hash_map升级到visual studio 10后编译错误

Question

以下在Visual Studio 08中编译得很好，但是当我升级到Visual Studio 10时，它不再编译。我不知道究竟是什么造成了这种情况，因为错误（至少对我而言）并不是很有帮助。这是一个大型项目，所以我在如下所示的小测试案例中发生了同样的错误。有任何想法吗？

MyHash.h

#ifndef __MyHash_h__ 
#define __MyHash_h__ 

#include <string> 
#include <tuple> 
#include <hash_map> 
#include <boost/functional/hash.hpp> 

typedef std::tr1::tuple<std::string, unsigned int, std::string> Identifier; 

class ValueNode { 
public: 
    ValueNode() { str = "TEST"; } 
    virtual ~ValueNode() { } 
    std::string getStr() { return str; } 
private: 
    std::string str; 
}; 

template<> inline 
size_t stdext::hash_value<Identifier>(Identifier const& id) 
{ 
    size_t seed = 0xffff0000; 
    boost::hash_combine(seed, std::tr1::get<0>(id)); 
    boost::hash_combine(seed, std::tr1::get<1>(id)); 
    boost::hash_combine(seed, std::tr1::get<2>(id)); 
    return seed; 
} 

class HashMapClass { 
private: 
    typedef stdext::hash_map<Identifier, ValueNode> MyMap; 

public: 
    HashMapClass() { } 
    virtual ~HashMapClass() { } 
    void meshAround(); 

private: 
    MyMap mMap; 
}; 

#endif // __MyHash_h__ 

Main.cpp的：

#include "MyHash.h" 

void HashMapClass::meshAround() { 
    ValueNode test; 
    Identifier id("HEYY", 140, "THERE"); 
    mMap[id] = test; 
} 

int main() { 
    std::cout << "HEY" << std::endl; 

    HashMapClass hash1; 
    hash1.meshAround(); 

    std::cout << "EXIT" << std::endl; 
    return 0; 
} 

错误：

1>c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\tuple(127): error C2664: 'std::basic_string<_Elem,_Traits,_Ax>::basic_string(const std::basic_string<_Elem,_Traits,_Ax> &)' : cannot convert parameter 1 from 'const Identifier' to 'const std::basic_string<_Elem,_Traits,_Ax> &' 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char>, 
1>    _Ax=std::allocator<char> 
1>   ] 
1>   Reason: cannot convert from 'const Identifier' to 'const std::basic_string<_Elem,_Traits,_Ax>' 
1>   with 
1>   [ 
1>    _Elem=char, 
1>    _Traits=std::char_traits<char>, 
1>    _Ax=std::allocator<char> 
1>   ] 
1>   No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called 
1>   c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xxtuple0(9) : see reference to function template instantiation 'std::tr1::_Cons_node<_Car,_Cdr>::_Cons_node<_Ty,std::tr1::_Nil&,std::tr1::_Nil&,std::tr1::_Nil&,std::tr1::_Nil&,std::tr1::_Nil&,std::tr1::_Nil&,std::tr1::_Nil&,std::tr1::_Nil&,std::tr1::_Nil&>(_Farg0 &&,_Farg1,_Farg2,_Farg3,_Farg4,_Farg5,_Farg6,_Farg7,_Farg8,_Farg9)' being compiled 
1>   with 
1>   [ 
1>    _Car=std::string, 
1>    _Cdr=std::tr1::_Cons_node<unsigned int,std::tr1::_Cons_node<std::string,std::tr1::_Tuple_type<std::tr1::_Nil,std::tr1::_Nil,std::tr1::_Nil,std::tr1::_Nil,std::tr1::_Nil,std::tr1::_Nil,std::tr1::_Nil,std::tr1::_Nil,std::tr1::_Nil,std::tr1::_Nil>::_Type>>, 
1>    _Ty=Identifier, 
1>    _Farg0=Identifier, 
1>    _Farg1=std::tr1::_Nil &, 
1>    _Farg2=std::tr1::_Nil &, 
1>    _Farg3=std::tr1::_Nil &, 
1>    _Farg4=std::tr1::_Nil &, 
1>    _Farg5=std::tr1::_Nil &, 
1>    _Farg6=std::tr1::_Nil &, 
1>    _Farg7=std::tr1::_Nil &, 
1>    _Farg8=std::tr1::_Nil &, 
1>    _Farg9=std::tr1::_Nil & 
1>   ] 
1>   c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\utility(145) : see reference to function template instantiation 'std::tr1::tuple<_Arg0,_Arg1,_Arg2>::tuple<const std::tr1::tuple<_Arg0,_Arg1,_Arg2>>(_Farg0 &&)' being compiled 
1>   with 
1>   [ 
1>    _Arg0=std::string, 
1>    _Arg1=unsigned int, 
1>    _Arg2=std::string, 
1>    _Farg0=const std::tr1::tuple<std::string,unsigned int,std::string> 
1>   ] 
1>   c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\utility(142) : while compiling class template member function 'std::_Pair_base<_Ty1,_Ty2>::_Pair_base(const std::tr1::tuple<_Arg0,_Arg1,_Arg2> &&,ValueNode &&)' 
1>   with 
1>   [ 
1>    _Ty1=const Identifier, 
1>    _Ty2=ValueNode, 
1>    _Arg0=std::string, 
1>    _Arg1=unsigned int, 
1>    _Arg2=std::string 
1>   ] 
1>   c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\utility(174) : see reference to class template instantiation 'std::_Pair_base<_Ty1,_Ty2>' being compiled 
1>   with 
1>   [ 
1>    _Ty1=const Identifier, 
1>    _Ty2=ValueNode 
1>   ] 
1>   c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\hash_map(206) : see reference to class template instantiation 'std::pair<_Ty1,_Ty2>' being compiled 
1>   with 
1>   [ 
1>    _Ty1=const Identifier, 
1>    _Ty2=ValueNode 
1>   ] 
1>   c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\hash_map(203) : while compiling class template member function 'ValueNode &stdext::hash_map<_Kty,_Ty>::operator [](const std::tr1::tuple<_Arg0,_Arg1,_Arg2> &)' 
1>   with 
1>   [ 
1>    _Kty=Identifier, 
1>    _Ty=ValueNode, 
1>    _Arg0=std::string, 
1>    _Arg1=unsigned int, 
1>    _Arg2=std::string 
1>   ] 
1>   c:\-----------------------\MyHash.h(41) : see reference to class template instantiation 'stdext::hash_map<_Kty,_Ty>' being compiled 
1>   with 
1>   [ 
1>    _Kty=Identifier, 
1>    _Ty=ValueNode 
1>   ] 

Answer 1

按照上面的评论，这看起来是在VC中的错误（placing objects deriving from tuple into a vector in C++）我已经从使用一个元组切换到一个小班，呃ror消失。为了完整性，这里是新类：

class Identifier { 
public: 
    Identifier(std::string a1, unsigned int a2, std::string a3) : arg1(a1), arg2(a2), arg3(a3) { } 

    std::string getArg1() const { return arg1; } 
    unsigned int getArg2() const { return arg2; } 
    std::string getArg3() const { return arg3; } 

private: 
    std::string arg1; 
    unsigned int arg2; 
    std::string arg3; 
}; 


inline bool operator< (const Identifier& lhs, const Identifier& rhs) { 
    return (lhs.getArg1() < rhs.getArg1() && lhs.getArg2() < rhs.getArg2() && lhs.getArg3() < rhs.getArg3()); 
}