Hello,
I would be very interested in knowing how the following C++ multi-instance
singleton (AKA Borg) design pattern based code snippet can be neatly coded
in Python. While there may be somewhat unusual places where multi-instance
singleton is more useful than plain singleton, it seems to me that the
former leads to less coding, so unless I can somehow package the
singleton pattern in a superclass (so I don't have to code it
explicityly in every singleton class I have), then I am more
interested in the multi-instance singleton design pattern.
Thanks,
Neil
#include <iostream>
class B {
public:
B() { }
void foo() const {
std::cout << x << std::endl;
}
void bar() {
std::cout << y++ << std::endl;
}
private:
static const int x = 0;
static int y;
};
int B::y = 1;
int main() {
B().foo();
B().bar();
B().foo();
B().bar();
B().bar();
}