We collect here versions of the programming languages we'll be looking at that you can run in your web browser:
+* [[Untyped lambda calculus evaluator|code/lambda_evaluator]] on this site
+
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-* [[Untyped lambda calculus evaluator]] on this site; also a [library](/lambda_library) of lambda-calculus arithmetical and list operations (some relatively advanced)
+; also a [[library|code/lambda_library]] of lambda-calculus arithmetical and list operations (some relatively advanced)
-->
* [Scheme](http://tryscheme.sourceforge.net/)