高手指教，关于c++(A set of codes)

strawabc

io.h: In function `void io::load_config(const char*, field&, field&, field&)':
io.h:38: no match for `std::ifstream& >> algebra::vector<double>&' operator

strawabc

I can't understand this error!
What does that mean?

lazyboy0001

It seems that do not have the overloaded defination of operator >> for
algebra::vector<class T>.