On Friday, 11 January 2013 at 18:22:30 UTC, Charles Hixson wrote:
I was looking for a way to create a weak reference to either a
struct or a class. I need to be able to use it to
automatically generate an active reference on access. (I
intend to do this by rolling in data from a file.)
Any guidance as to where I should look?
Looks like you'll have to create the access yourself, you can
forward access to the new ptr via a property call by the function
you name. This works.
struct S {
int x;
S* _s; //for weak ptr.
//constructor details so we can show it's
//differences in the lower prints.
S* s(int x) {
if (_s is null)
_s = new S(x);
return _s;
}
void print(){writeln(this);}
}
S test;
test.print();
test.s(10).print();
test.print();
I've tried making a weakPtr template function, however it
complains about a nested function call (perhaps cause it was
within a unittest); Shows the problem(s) on that side.
It's possible to write a mixin that could do those details for
you.
