RawArrayPopulated method
Allocates an unslotted pointer-of-pointers from a list of struct arrays.
The caller is responsible for freeing the returned pointer.
Implementation
PP RawArrayPopulated(List<List<X>> arrays) {
final p = Raw(arrays.length);
for (int i = 0; i < arrays.length; i++) indexSetterFunc(p, i, rawArrayFunc(arrays[i]));
return p;
}