Over the summer, we built a new tool for visualizing program execution: think of it as a complement to the Stepper. It is similar in that it shows you the steps of program execution, what they evaluate to, and thus how the result is obtained (though it focuses only at the level of user-defined functions, ignoring the primitive operations). However, the Stepper presents a linear view of the computation, whereas the Tracer presents a tree-shaped view.
It's easiest to understand this by looking at an example, which you can do from the documentation. This also gives you instructions on how to run the Tracer. http://planet.plt-scheme.org/package-source/tracer/tracer.plt/1/7/planet-docs/tracer/index.html Here are some other example programs that you can try out to see the Tracer at work: https://github.com/retief/racket_tracer/tree/master/demos/good_demos Tracer was built by two Brown undergrad students, Jeanette Miranda and William Zimrin. Please let us know if you have any feedback! Shriram _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
