# Heist: a Scheme interpreter in Ruby

**URL:** <https://www.ruby-forum.com/t/heist-a-scheme-interpreter-in-ruby/161283>\
**Category:** Ruby\
**Created:** [February 25, 2009, 1:20am UTC](https://www.ruby-forum.com/t/heist-a-scheme-interpreter-in-ruby/161283 "2009-02-25T01:20:50Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![james-calivar](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/2bfe46/32.png) [@james-calivar](https://www.ruby-forum.com/u/james-calivar)\
**Post date:** [February 25, 2009, 1:20am UTC](https://www.ruby-forum.com/t/heist-a-scheme-interpreter-in-ruby/161283/1 "2009-02-25T01:20:50Z")

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Hi all,

Just a quick announcement that I’ve just released the first alpha  
version of  
Heist, a Scheme interpreter in Ruby. It’s currently fairly  
arithmetic-focused, but it also has runtime support for some of the more  
tricky stuff like tail recursion, macros and first-class continuations.  
More  
info on my blog, and on Github:

[http://blog.jcoglan.com/2009/02/25/announcing-heist-a-new-scheme-implementation-written-in-ruby/](http://blog.jcoglan.com/2009/02/25/announcing-heist-a-new-scheme-implementation-written-in-ruby/)

> **[GitHub - jcoglan/heist: Scheme in as little Ruby and as much Scheme as...](https://github.com/jcoglan/heist/)**
>
> Scheme in as little Ruby and as much Scheme as possible. Supports macros, continuations, tail recursion and lazy evaluation. - GitHub - jcoglan/heist: Scheme in as little Ruby and as much Scheme as...

Feedback very much appreciated. I know people are forking it already,  
and  
while this is very gratifying I should point out I’m currently not  
accepting  
patches as I’m writing this mostly for my own education. Implementation  
advice and literature will be very gratefully received, however.