[boost] Re: constructor in singleton?

6 May 2005


      Pavel Vozenilek wrote:
...
"Neal Becker" write:
...
I'm a little confused about singleton usage.  Can a singleton have a
constructor?
I tried this:
using boost::basic_singleton;
struct Example :
 public basic_singleton<Example> {
 Example() {
   std::cout << "Hello\n";
 }
 int Cnt() const { return 0; }
};
int main() {
 Example::pointer ptr;
 std::cout << ptr->Cnt();
}
./Test1
0
It appears constructor wasn't run, because nothing was printed.
I tried it with Intel 7 (plugged in VC6 IDE) and it works for me.
What is your compiler?
I ran it on gcc version 3.4.3 20050227 (Red Hat 3.4.3-22.fc3) (x86_64),
latest singelton lib (per announcement), and boost-1.32.0