On 10/15/06, YYW <yyw1_25@sohu.com> wrote:
Hello all, why the codes below is wrong in g++ 3.4.2? an error occurs in the line: cout<<CMatrix<double>::eye(5);
Whats the error? Kobi. --------------------------------------
#include <ostream> #include <boost/numeric/ublas/matrix.hpp> #include <boost/numeric/ublas/io.hpp>
using namespace boost::numeric::ublas; using namespace std;
template <class T> class CMatrix { matrix<T>mat_;
public: CMatrix(const identity_matrix<T>& m) { mat_ = m; } static CMatrix<T> eye(int size) { return identity_matrix<T>(size); }
template <class T_> friend ostream& operator << (ostream& os, CMatrix<T_>& m); };
template<class T_> ostream& operator << (ostream& os, CMatrix<T_>& m) { os<<m.mat_; return os; }
int main() { CMatrix<double>I = CMatrix<double>::eye(5); cout<<I;
cout<<CMatrix<double>::eye(5);//this line ==> error } ---------------------------------------- Thanks in advance!
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-- - Kobi