Brown University's accelerated intro CS class only uses Racket (http://www.cs.brown.edu/courses/csci0190/2011/ http://www.cs.brown.edu/courses/csci0190/2011/).

Brown University's accelerated intro CS class only uses Racket (http://www.cs.brown.edu/courses/csci0190/2011/ http://www.cs.brown.edu/courses/csci0190/2011/). Beautiful language. Everything in the language, including basic core functions, can be built only using lambda