Jiaming Yuan 6762c45494
Small cleanup to gradient index and hist. (#7668)
* Code comments.
* Const accessor to index.
* Remove some weird variables in the `Index` class.
* Simplify the `MemStackAllocator`.
2022-02-23 11:37:21 +08:00
..
2021-03-20 16:52:40 +08:00
2020-08-18 19:55:41 +08:00
2021-02-09 08:12:58 +08:00
2021-11-02 13:35:59 +08:00