In the HTTP benchmark game, there is also Bryan O'Sullivan's attoparsec-based parser: http://www.serpentine.com/blog/2014/05/31/attoparsec/ http://www.serpentin

In the HTTP benchmark game, there is also Bryan O'Sullivan's attoparsec-based parser: http://www.serpentine.com/blog/2014/05/31/attoparsec/ http://www.serpentine.com/blog/2014/05/31/attoparsec/ The important point is that the parser is a few dozen lines of code (i.e. it relies on a general parsing library instead of being custom hand-written code).