Re: [suse-programming-e] compile problem with template class.

20 Jul 2003


      Cincai Patron  [Sun, 20 Jul 2003 11:42:23 +0800]:
...
why this simple codes fail to compile (error during linking)?
/************************ Kelas.h **********************/
template<typename T>
class Kelas {
   public:
       Kelas();
       int getInt() const;
};
/************************ Kelas.cpp **********************/
#include "Kelas.h"
template<typename T>
Kelas<T>::Kelas() {
}
template<typename T>
int Kelas<T>::getInt() const {
   return 100;
}
/*********************** coba.cpp ***************************/
#include <iostream>
#include "Kelas.h"
using namespace::std;
int main() {
   Kelas<int> k;
   cout << k.getInt() << endl;
}
/*********************** end of coba.cpp ***************************/
The compiler has to see the complete definition of a template in order to
instantiate it where needed (that is, until it supports the 'export'
keyword). I'd therefor suggest to include Kelas.cpp in Kelas.h.

Philipp

-- 
Philipp Thomas                   work: pthomas@suse.de
                              private: philipp.thomas@t-link.de