Refactor select method and add getindex function
#539
| Job | Run time |
|---|---|
| 23m 23s | |
| 11m 14s | |
| 34m 37s |
select method and add getindex function
#539
| Job | Run time |
|---|---|
| 23m 23s | |
| 11m 14s | |
| 34m 37s |