Commits
Korn, Uwe authored and Wes McKinney committed 33b628acf53
ARROW-1882: [C++] Reintroduce DictionaryBuilder Readded the previous code and moved some small parts to a new common place to share logic between kernels and builder. Author: Korn, Uwe <Uwe.Korn@blue-yonder.com> Author: Wes McKinney <wes.mckinney@twosigma.com> Closes #1388 from xhochy/ARROW-1882 and squashes the following commits: db9d67a8 [Wes McKinney] Consolidate some hash table constants in util/hash.h b387b73d [Korn, Uwe] Ensure 64but integers 4743a8bb [Korn, Uwe] Fix precision loss 4c507fed [Korn, Uwe] ninja format a1da9355 [Korn, Uwe] Reuse common hash table code ba307794 [Korn, Uwe] ARROW-1882: [C++] Reintroduce DictionaryBuilder