3 ms·

If you go with (hygenic) fexprs instead of macros, they're both easier to implement and more expressive, at the expense of performance. Check out John Shutt's

• sago 9y ago
  Thanks for the tip. If it wasn't the end of the weekend, I'd be tempted to break out emacs.
• sparkie 9y ago
  Here's a small implementation of Kernel in around 700 lines of Haskell [https://github.com/vito/hummus/tree/master/src/Hummus https://github.com/vito/hummus/tree/master/src/Hummus]. Note that it's not Kernel proper, as it uses delimited continuations instead of the guarded undelimited continuations in the Kernel report, plus there's a few other differences and some bugs. Anyone looking for a more complete implementation, check out klisp [http://klisp.org http://klisp.org]. It's not 100%, but has some stuff not included in the Kernel report, some of it lifted from R6RS. The main thing it's missing which it desperately needs is an FFI.
  • radarsat1 9y ago
    On the subject of Haskell, what's the shortest Haskell (possibly Haskell subset) interpreter anyone has written?