I'm running on g++ v2.95 and 3.2.
Why is it that the print functions work fine without any extra template
parameters, but the SizeOfCod2 function requires that the bold code be
uncommented?
Thanks,
Siegfried
template<typena me T>void print (const T& xx){ std::cout << xx <<
std::endl; }
template<>void print (const std::string& xx){ std::cout << "string = " <<
xx << std::endl; }
template<>void print (const R2::Cod_st& xx) { std::cout << "r2 cod = " <<
std::endl; }
template<>void print (const R3::Cod_st& xx) { std::cout << "r3 cod = " <<
std::endl; }
namespace CodAddress{
template<typena me COD> unsigned int SizeOfCod2(COD* = 0){ return
sizeof(COD); }
template<> unsigned int SizeOfCod2/*<R2::Cod_st>*/(R2::Cod_st* ){
return R2::Cod_st::PAR AM::BLOCKSIZE +
CodAddress::LUN CopyChapterAddr ess/*<R2::Cod_st>*/() +
CodAddress::LUN CopyChapterSize <R2::Cod_st>( );
}
};
2  1413 
Siegfried Heintze wrote: I'm running on g++ v2.95 and 3.2.
Why is it that the print functions work fine without any extra
template parameters,
They have _arguments_ from which the template argument is deduced.
but the SizeOfCod2 function requires that the
bold code be uncommented?
Which code is "bold"? I am using text-only newsreader. Did you use
HTML? Please don't. Just mark certain lines in your code with some
symbols in comments so they can be referred to.
template<typena me T>void print (const T& xx){ std::cout << xx <<
std::endl; }
template<>void print (const std::string& xx){ std::cout << "string
= " << xx << std::endl; }
template<>void print (const R2::Cod_st& xx) { std::cout << "r2 cod
= " << std::endl; }
template<>void print (const R3::Cod_st& xx) { std::cout << "r3 cod
= " << std::endl; }
namespace CodAddress{
template<typena me COD> unsigned int SizeOfCod2(COD* = 0){ return
sizeof(COD); }
template<> unsigned int SizeOfCod2/*<R2::Cod_st>*/(R2::Cod_st* ){
This comment can be easily removed because the template argument is
deduced from the function argument.
return R2::Cod_st::PAR AM::BLOCKSIZE +
CodAddress::LUN CopyChapterAddr ess/*<R2::Cod_st>*/() +
This one 'R2::Cod_st' needs to be here because there is no argument
to deduce the template argument from.
CodAddress::LUN CopyChapterSize <R2::Cod_st>( );
}
};
V
--
Please remove capital As from my address when replying by mail
{
template<typena me COD> unsigned int SizeOfCod2(COD* = 0){ return
sizeof(COD); }
template<> unsigned int SizeOfCod2/*<R2::Cod_st>*/(R2::Cod_st* ){
This comment can be easily removed because the template argument is
deduced from the function argument.
I specifically added the R2::Cod_st* argument so it could deduce the
template argument. However this did not help. In its present form, it does
not compile. If I remove the /* and */ it compiles. Why cannot it deduce the
template argument as I have typed it above? The template argument can be
deduced from my print functions. What is different?
Thanks,
Siegfried This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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