regex_engine

GitHub

expertruntimeRust

results

Measured by wall-clock runtime in seconds — lower is better.

1.5s0.37s

sota

Claude-Opus-4.6

reward 1.000

Usage

Run the reference answer to verify your environment is set up correctly

$ harbor run -p tasks/regex_engine

Test model

$ harbor run -p tasks/regex_engine \
  -a claude-code -m claude-opus-4-6

Description

Build a regex engine in Rust that compiles a fixed set of patterns and matches them against 100,000 haystacks (HTTP paths, log messages, emails, etc.) as fast as possible. Both compilation and search time are measured. Supported syntax includes alternation, quantifiers, character classes, anchors, and grouping.