According to the D slice article
(https://dlang.org/articles/d-array-article.html), slices do not
care where they start, only where they end, when checking whether
expanding in place is permitable, or at least that is what I
understood regarding it.
Now I'm unsure how to check this, I tried to a bit using the
online editor and a bit of pointer usage which seemed to confirm
my suspicion, but does this mean that taking a (small) slice at
the end of a (possibly) very large dynamic array can lead to
problematic behavior?
For example;
int[] a = new int[10]; // Imagine this is very large
int[] b = a[$-1..$]; // Small slice at the end
b ~= 2; // b extends, possibly in place
a ~= -1; // a no longer can, so the entire array
needs reallocating
(instead of be reallocating & a growing in place)
Again I'm not very certain I fully understood how slices are
implemented, but is this example, and the problem I imagine it
leading to, valid?
