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Gmane
From: <gdweber <at> iue.edu>
Subject: ANNOUNCE: Sifflet visual programming language, release 1.2
Newsgroups: gmane.comp.lang.haskell.general
Date: Sunday 31st October 2010 23:20:00 UTC (over 6 years ago)
Sifflet and sifflet-lib 1.2 are now available on Hackage.

Sifflet is a visual, functional programming language
and support system for students learning about recursion.
Sifflet programmers define functions by drawing diagrams,
and the Sifflet interpreter uses diagrams to show how the
function calls are evaluated.

Sifflet-lib is the library containing many modules of the sifflet 
application.

What's New
----------

-   Compatible with and requires HXT version 9.0

-   Sifflet(-lib) requires only the core of HXT.  Due to the split of
    HXT into several packages, sifflet no longer indirectly requires
    curl.  This should make it easier to install on Windows!  However,
    I haven't been able to test installing it on Windows myself.
    Reports are welcome!
    
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://mypage.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.
    -   A carefully crafted tutorial with 31 pictures and about as many
pages.
    -   Number, string, and list data types.
    -   A small collection of primitive functions.
    -   Runnable examples of compound functions.
    -   Sifflet functions can be "exported" to Scheme,
        Python 3, and Haskell.

*   Download:
    http://hackage.haskell.org/package/sifflet-lib
    http://hackage.haskell.org/package/sifflet

*   Home page:
    http://mypage.iu.edu/~gdweber/software/sifflet/home.html

*   Tutorial:
    http://mypage.iu.edu/~gdweber/software/sifflet/doc/tutorial.html

-- 
   ___   ___  __     _      
  / _ \ / _ \| |    | |     Gregory D. Weber, Associate Professor
 / /_\// / | | | /\ | |     Indiana University East
/ /_\\/ /__| | |/  \| |     http://mypage.iu.edu/~gdweber/
\____/\_____/\___/\__/      Tel. (765) 973-8420; FAX (765) 973-8550
 
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