def indexed.choose
import bend-kit-http2@0.4.0.0/hpack.bend as Hpackimport Base
219def indexed.choose(s: Bool, +i: U32, xs: List<&2, Field>) -> Maybe<&2, Field>:
220 match s:
221 case True{}:
222 indexed.static(U32.is_ne(i, 0), i)
223 case False{}:
224 table.at(xs, U32.to_nat((i - 62 : U32)))