Makes sense. The only obstacle to +v is: what do we choose for string views and binary views? They are not nested, so the + prefix of list-view (as it’s nested) would differentiate them, but is that OK?
— Felipe On Thu, 5 Oct 2023 at 16:33 Dewey Dunnington <de...@voltrondata.com.invalid> wrote: > Union format strings share enough properties that having them in the > same switch case doesn't result in additional complexity...lists and > list views are completely different types (for the purposes of parsing > the format string). Is there any reason *not* to use +v and +V? The > switch statements used to parse the format string are already rather > unwieldy...it would be a nice quality-of-life improvement (although by > no means a required one) to use a separate character. > > On Thu, Oct 5, 2023 at 3:34 PM Felipe Oliveira Carvalho > <felipe...@gmail.com> wrote: > > > > This mailing list thread is going to be the discussion. > > > > The union types also use two characters, so I didn’t think it would be a > > problem. > > > > — > > Felipe > > > > On Thu, 5 Oct 2023 at 15:26 Dewey Dunnington > <de...@voltrondata.com.invalid> > > wrote: > > > > > I'm sorry for missing earlier discussion on this or a PR into the > > > format where this discussion may have occurred...is there a reason > > > that +lv and +Lv were chosen over a single-character version (i.e., > > > maybe +v and +V)? A single-character version is (slightly) easier to > > > parse in C. > > > > > > On Thu, Oct 5, 2023 at 2:00 PM Felipe Oliveira Carvalho > > > <felipe...@gmail.com> wrote: > > > > > > > > Hello, > > > > > > > > I'm writing to propose "+lv" and "+Lv" as format strings for > list-view > > > and > > > > large list-view arrays passing through the Arrow C data interface > [1]. > > > > > > > > The vote will be open for at least 72 hours. > > > > > > > > [ ] +1 - I'm in favor of this new C Data Format string > > > > [ ] +0 > > > > [ ] -1 - I'm against adding this new format string because.... > > > > > > > > Thanks everyone! > > > > > > > > -- > > > > Felipe > > > > > > > > [1] https://arrow.apache.org/docs/format/CDataInterface.html > > > >
