Question

I have a very basic question.

I write a loop like this:

while(true)
{
   MyTestClass myObject = new MyTestClass();
}

1. When will be the object created in
   the loop, garbage collected?
2. Also, for every iteration, is it
   that the new memory location is
   allocated to the myObject reference?
3. What if i write myObject = null; at the end of every iteration?

Answer 1

1. whenever GC feels like it, frankly; the variable is never read, so it is always eligible
2. myObject is the variable – that has a fixed position on the stack for the reference; however, each new MyTestClass() is a different object, created somewhere in the available heap space; different each time
3. no difference whatsoever; strictly speaking there are some complexities involving the actual declaration point of the variable (in IL) and how while is actually implemented – but that would only show after exiting the loop. And since on each iteration you immediately allocate it, there is no tangible difference here