I am diddling with a pile of C++ code that hasn't gotten any better.
Here is one example of the problems I'm trying to work through. I
suspect that it relates to differences between the C++ compilers of days
gone by, and those active today.
I have a header file (matrix.h) that declares a template:
template<class T>
class Matrix {
public:
//...
friend ostream& operator<< <> (ostream&, const Matrix<T>&);
friend istream& operator>> <> (istream&, Matrix<T>&);
//...
};
and when I use the declaration
Matrix<intmod> Tl; // line 34
in a program, I get this as output (gcc3, 1151, 10.1.5):
matrix.h: In instantiation of `Matrix<intmod>':
test.cc:34: instantiated from here
matrix.h:142: template-id `operator>><>' for `std::basic_istream<char,
std::char_traits<char> >& operator>>(std::basic_istream<char,
std::char_traits<char> >&, Matrix<intmod>&)' does not match any
template
declaration
matrix.h:141: template-id `operator<< <>' for `std::basic_ostream<char,
std::char_traits<char> >& operator<<(std::basic_ostream<char,
std::char_traits<char> >&, const Matrix<intmod>&)' does not match any
template declaration
This sure strikes me as weird, but I don't have enough time in the C++
saddle to make heads or tails out of it. Does this strike a chord with
anyone? Or, is there a better list to ask?
Thanks for any help.
Regards,
Justin
--
Justin C. Walker, Curmudgeon-At-Large *
Institute for General Semantics | If you're not confused,
| You're not paying attention
*--------------------------------------*-------------------------------*
