hmm, zobrazuje to na najsłynniejszej klasie Foo:
#include
using namespace std;
/* myk, zeby dzialal friend w templacie */
template class Foo;
template
Foo operator+(const Foo &a, const Foo &b);
template
class Foo {
public:
Foo(T _i = T()) : i(_i) {}
friend Foo operator+<>(const Foo &a, const Foo &b); /* te dziubki "<>" to tez myk, zeby dzialal template'owy friend w templacie */
private:
T i;
};
template
Foo operator+(const Foo &a, const Foo &b)
{
cerr << "domyslny operator+" << endl;
return Foo(a.i + b.i);
}
template <>
Foo operator+(const Foo &a, const Foo &b)
{
cerr << "specyficzny dla int operator+" << endl;
return Foo(a.i + b.i);
}
int main()
{
Foo i = 5, j = 6;
Foo k = i + j;
Foo fi = 5.0, fj = 6.0;
Foo fk = fi + fj;
return 0;
}
