Now I have even more questions. List<List<T>> uses one values buffer for the instances of T (according to Layout.md).
List<Struct> couldn't possibly do that. Is that a valid type in Arrow? Thanks, Andy. On Thu, May 3, 2018 at 6:17 AM, Antoine Pitrou <anto...@python.org> wrote: > > Le 03/05/2018 à 14:03, Andy Grove a écrit : > > I've been looking at the C++ and Java code bases, trying to find examples > > of List<List<T>> and am having trouble finding them. Are these > implemented? > > You can take a look for example at `TEST(TestListType, Basics)` in > type-test.cc. > > Parametric types in Arrow C++ are not templates, they are dynamic types. > This allows for arbitrary nesting (not only lists of lists, but structs > of lists, lists of structs, etc.). You probably want to do something > similar in Rust. > > Regards > > Antoine. >
