hare-1brc

The One Billion Row Challenge in Hare.

Most of the logic is taken from https://github.com/jonhoo/brrr, with the exception of i64parse being from https://github.com/benhoyt/go-1brc

Performance

On my PC with an i5-9400f, 2x8GB of DDR4@2666MHz and the file on a SATA SSD ./1brc finishes in 7 seconds.