perf: replace ToImmutableHashSet with manual implementation
#173
| Job | Run time |
|---|---|
| 1m 5s | |
| 19s | |
| 1m 2s | |
| 1m 18s | |
| 1m 33s | |
| 2m 27s | |
| 9s | |
| 7m 53s |
ToImmutableHashSet with manual implementation
#173
| Job | Run time |
|---|---|
| 1m 5s | |
| 19s | |
| 1m 2s | |
| 1m 18s | |
| 1m 33s | |
| 2m 27s | |
| 9s | |
| 7m 53s |