Hi,
Here is a sample custom string class that I am tring to get working with
lexical_cast but it gives me compile errors. Can you please see what I am doing wrong here. More explanation below.
OTOH if I use a custom lexical_cast using wstringstream it works fine.
// main.cpp
#include <string>
#include <iostream>
#include "boost_1_33_1/boost/lexical_cast.hpp"
using namespace std;
class String : public wstring
{
public:
String()
{
}
String(const wchar_t *str) : wstring(str)
{
}
String& operator=(const String& Rhs)
{
return static_cast(wstring::operator=(Rhs));
}
};
// This is commented cause lexical_cast wants bool return value.
#if 0
template<class OutputStream>
OutputStream& operator<<(OutputStream &o, const String &s)
{
return o << s.c_str();
}
#endif
template<class OutputStream>
bool operator<<(OutputStream &o, const String &s)
{
o << s.c_str();
return true;
}
// This is commented cause lexical_cast wants bool return value.
#if 0
template<class InputStream>
InputStream& operator>>(InputStream &i, String &s)
{
wstring ws;
i >> ws;
s.assign(ws);
return i;
}
#endif
template<class InputStream>
bool operator>>(InputStream &i, String &s)
{
wstring ws;
i >> ws;
s.assign(ws);
return true;
}
int main()
{
// This line causes errors both on MSVC and GCC.
wcout << boost::lexical_cast<String>(10);
// These lines DONT cause errors and work ok.
String s = L"hello";
wcout << s;
wcout << endl;
wcin >> s;
wcout << s;
wcout << endl;
return 0;
}
shams