[plt-scheme] Re: HOWTO: SchemeQL + MySQL on OS X

Hi all,

I'd like to echo all of the positive comments about the PLT tool suite
and ...

I was just about to post a similar question about error messages.

I'm using mzscheme for developing cgi-bin scripts, and was wondering
if there is anyway to grab the file and line number at which an error
occurred?

Many thanks in advance!

--David

On Mon, Feb 09, 2004 at 05:44:49PM -0500, Dan Winkler wrote:
>  For list-related administrative tasks:
>  http://list.cs.brown.edu/mailman/listinfo/plt-scheme
> 
> I'd like to respond to this message which I found in the archives about 
> SchemeQL, the high level interface from Scheme to relational databases:
> 
> 	http://list.cs.brown.edu/pipermail/plt-scheme/2003-October/003791.html
> 
> I'd like to give a big thanks to David Herman for sharing his knowledge 
> of how to make SchemeQL work with MySQL on OS X.  I followed his 
> instructions and I got it to work.
> 
> I'd also like to report a bug which I find very disconcerting.  If I 
> call SchemeQL's connect-to-database and pass it the name of a database 
> which does not exist, it causes the whole PLT Scheme environment to 
> crash and die!  I've verified that SrPersist, which SchemeQL uses, does 
> *not* crash when you try to connect to a non-existent database, so I 
> think the bug must be in SchemeQL itself.
> 
> I'd like to tell everyone who works on DrScheme that I think you've 
> created a marvelous environment.  It just works correctly and 
> intuitively virtually all the time for me.  I especially love the 
> cross-platform, native-look-and-feel GUI classes.  I don't think any 
> other lisp has that.  And you've done such a great job at creating a 
> Scheme interface onto the wxWindows library that I find it much easier 
> to use than wxPython which is a similar effort for Python.
> 
> I guess the one thing I'd like to see improved in DrScheme would be 
> better run time error reporting and debugging.  Sometimes I introduce 
> an error and although Dr. Scheme will tell me something's wrong I can't 
> glean any useful information from the error message.  As a result, I 
> rely on making small changes at a time so when something goes wrong I 
> know it's related to whatever I just changed.  If someone were to 
> introduce a random error into my large program or if I tried to make 
> many changes at once, I think I'd never be able to debug it.
> 
> I'd like to close with a recommendation for a great programmer's editor 
> which I use with DrScheme.  It's Leo, the programmer's editor and 
> outliner, which you can get for free here: http://leo.sourceforge.net/  
> Leo lets you write your programs in outline form so that you can hide 
> complexity by using hierarchy.  It automatically writes your program 
> out in a flat file which can be loaded into traditional tools such as 
> DrScheme.  I wouldn't want to program any other way -- Leo + DrScheme 
> is the best as far as I'm concerned.  Check it out!
> 
> -- Dan
> 
>