Yes, I am familiar with Marceau's work (at least the published papers), it is very cool. One of very few systematic research-based approaches to error messages. I haven't used WeScheme, might be something to look into (although our target audience is college students and other adult beginners, not middle school).
Elena On Tue, Apr 12, 2016 at 11:13 AM, Matthias Felleisen <[email protected]> wrote: > > Yes, all of our releases are always announced. > > If you are studying error messages, please check out Guillaume Marceau’s > work, supervised by Kathi Fisler and co-advised by Shriram Krishnamurthi. > He worked out an even better version of his ideas for WeScheme, which is > still the starting point for Bootstrap, our educational spin-off project > for middle schools. > > — Matthias > > > > > > On Apr 12, 2016, at 11:58 AM, Elena Machkasova <[email protected]> > wrote: > > Sounds good, thanks! Will the new release be announced? We are looking at > error messages as a part of a research project, so it would be good to use > the new one if we can. > > Elena > > On Tue, Apr 12, 2016 at 10:53 AM, Matthias Felleisen <[email protected] > > wrote: > >> >> Thanks, I have pushed a fix and additional tests for error messages. This >> will be included with the next release, to appear in a couple of weeks. — >> Matthias >> >> >> >> >> > On Apr 11, 2016, at 9:25 PM, Elena Machkasova <[email protected]> >> wrote: >> > >> > Hi All, >> > >> > we have discovered that in 6.4 DrRacket (Advanced Student) seems to >> have a bug generating error messages for foldl/foldr: >> > >> > (foldl + (list 2 3 4) 0) >> > >> > gives an error message "foldl: 2th argument must be a list, given 0" >> > (in addition to the incorrect "th" for "2nd", the 0 is actually the >> third argument, not second). >> > >> > There is also a somewhat misleading error (for beginners) in 6.4 and >> earlier versions, shown with a somewhat artificial example: >> > >> > (map (lambda (x y) (+ x y)) (list 2 3 4)) >> > >> > gives and error: >> > >> > the given procedure's expected number of arguments does not match >> > the given number of lists >> > given procedure: #<procedure> >> > expected: 2 >> > given: 1 >> > >> > This is technically correct, but not understandable to a student since >> most likely they mistakenly used a two-argument function instead of a >> one-argument one. In fact, students are never shown a map with multiple >> lists. A better message would say that a one-argument function was >> expected, but a two-argument function was given. >> > >> > The second error is somewhat of a design choice, but the first one >> (with foldl) is a bug. If there is a way to patch it in 6.4, that would be >> greatly appreciated. >> > >> > Cheers, >> > Elena >> > >> > >> > -- >> > You received this message because you are subscribed to the Google >> Groups "Racket Users" group. >> > To unsubscribe from this group and stop receiving emails from it, send >> an email to [email protected]. >> > For more options, visit https://groups.google.com/d/optout. >> >> > > > -- > Dr. Elena Machkasova > Associate Professor of Computer Science > Division of Science and Mathematics > University of Minnesota, Morris > Office: Sci 2325 > (320) 589-6308 > http://cda.morris.umn.edu/~elenam/ > > > -- Dr. Elena Machkasova Associate Professor of Computer Science Division of Science and Mathematics University of Minnesota, Morris Office: Sci 2325 (320) 589-6308 http://cda.morris.umn.edu/~elenam/ -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
