Sifflet 2.3.0 is now available on Hackage. This release brings Sifflet up to date, so it compiles with GHC 7.10.3, newer versions of depended-on libraries, and builds in a cabal sandbox. Sifflet is the visual, functional programming language and support system for students learning about recursion. Sifflet programmers define functions by drawing diagrams, and the Sifflet interpreter uses the diagrams to show how function calls are evaluated. The Sifflet library (formerly sifflet-lib package) is reintegrated into, and deprecated in favor of, the sifflet package. A test suite is added. Personal Note ------------- It's been about 18 months since I've been able to work on this project or do any serious Haskell development. A lot has changed in the Haskell world -- a lot of catching up to do! It feels good getting back to Haskell again. About Sifflet ------------- Sifflet is a visual, functional programming language intended as an aid for learning about recursion. * A picture explains Sifflet better than words: please see the screenshot showing how to evaluate 3!: http://pages.iu.edu/~gdweber/software/sifflet/home.html * Features: - Visual editor. - Visual tracer/debugger which shows how recursive and other function calls are evaluated. To support active learning and avoid screen clutter, Sifflet displays only as much of the computation as the user requests. - Carefully crafted tutorial with 44 pictures, about 26 pages if printed. - Number, string, and list data types. - Small collection of primitive functions. - Runnable examples of compound functions. - Sifflet functions can be exported to Scheme, Python 3, and Haskell. References ---------- * Download: http://hackage.haskell.org/package/sifflet * Home page: http://pages.iu.edu/~gdweber/software/sifflet/home.html * Sifflet Tutorial: http://pages.iu.edu/~gdweber/software/sifflet/doc/tutorial.html * Change log: http://pages.iu.edu/~gdweber/software/sifflet/ChangeLog.html -- Gregory D. Weber, Ph. D. http://pages.iu.edu/~gdweber/ Associate Professor of Informatics Tel (765) 973-8420 Indiana University East FAX (765) 973-8550