Commits

Wes McKinney authored 9c2b95446ab
ARROW-23: Add a logical Column data structure I also added global const instances of common primitive types Author: Wes McKinney <wesm@apache.org> Closes #15 from wesm/ARROW-23 and squashes the following commits: 1835d33 [Wes McKinney] Don't use auto 988135c [Wes McKinney] Add Column chunk type validation function 8a2e40e [Wes McKinney] Remove unneeded operator()/shared_from_this experiment de9ec70 [Wes McKinney] Aggregate null counts too 7049314 [Wes McKinney] cpplint a565d26 [Wes McKinney] Add ChunkedArray / Column ctors, test passes 0648ed2 [Wes McKinney] Prototyping