def two.rejoin
import bend-parallel@0.1.0.0/scan.bend as Scanimport Base
96# A leaf's spare handles, joined back after its work.
97def two.rejoin(a2: Array<U32>, s2: Array<U32>, r: Two) -> Two:
98 Two{a, s} = r
99 Two{Array.join(U32, a, a2), Array.join(U32, s, s2)}