Anyone know of an interactive "lambda calculus" expression evaluation site? Or something in that UX neighborhood that I should use for inspiration?
I know I used to answer a lot of #haskell questions just by stepping though evaluation. I thought it would be nice to have that on a website and I have a basic expression parser and visualizer in #purescript running on my website ("production" is a buggy version, tho) but need to design interactive stepping.
