Could you just require match into bsl/isl? Robby On Wednesday, August 17, 2011, Prabhakar Ragde <<a href="mailto:plragde@uwaterloo.ca">plragde@uwaterloo.ca</a>> wrote: > On 8/17/11 10:30 AM, Shriram Krishnamurthi wrote: >> >> My experience last year was that the restrictions on some of these >> sub-forms were arbitrary and not helpful. It also makes it harder for >> students because if they click on the "wrong" documentation, they >> don't understand why the thing that the docs say should work doesn't. > > Well, I certainly didn't. The Advanced Student documentation doesn't really explain `match', so one has to go to the Guide or Reference anyway (e.g. for quasipatterns). It takes some careful peering at the grammar of Advanced Student to notice that ASL `match' is restricted, and to figure out what is permissible. > > I would like to use `and', `or', and `?' patterns, at least. But to do so I have to take the students into Advanced Student earlier than I want (just after functional abstraction) and forbid them to use all the `!' functions and I/O. However, if I'm only going to get a restricted version of `match' by doing that, I might as well take them into #lang racket. > > Okay, maybe I won't go to that extreme yet. Let me see how far I can get without full `match'. --PR > _________________________________________________ > For list-related administrative tasks: > <a href="http://lists.racket-lang.org/listinfo/users">http://lists.racket-lang.org/listinfo/users</a> >