Use class Peekable for parser
#754
| Job | Run time |
|---|---|
| 12s | |
| 36s | |
| 24s | |
| 58s | |
| 24s | |
| 1m 0s | |
| 23s | |
| 1m 1s | |
| 25s | |
| 1m 1s | |
| 26s | |
| 38s | |
| 32s | |
| 50s | |
| 55s | |
| 1m 1s | |
| 57s | |
| 1m 9s | |
| 38s | |
| 2m 4s | |
| 59s | |
| 1m 3s | |
| 59s | |
| 1m 7s | |
| 45s | |
| 47s | |
| 58s | |
| 1m 2s | |
| 58s | |
| 1m 2s | |
| 44s | |
| 42s | |
| 53s | |
| 59s | |
| 1m 54s | |
| 1m 11s | |
| 49s | |
| 46s | |
| 1m 4s | |
| 1m 2s | |
| 58s | |
| 1m 1s | |
| 44s | |
| 44s | |
| 3s | |
| 0s | |
| 38m 48s |