Hi, just a couple of questions about how the GC works
1.
if you have an array that doesnt have any pointers like
```
struct Point { double x,y;}
Point[] points;
```
Does the GC still go through and scan them for pointers or does
the compiler know that it doesn't have to?
2.
if you have an array with a local scope
```
while(something)
{
int[] xs;
// do something
} <-- does it return the memory here for 'xs' for reuse
instantly since it knows it's unreachable or does it wait for a
collection event?
```
