Thanks, David. I would be interested in someone walking through how this behavior arises -- as well as the design issue regarding the "hopeless top-level": Is this the least-bad option available or an unexpected consequence?
--Dan On Mon, Oct 22, 2012 at 7:30 PM, David Van Horn <dvanh...@ccs.neu.edu>wrote: > On 10/22/12 10:05 PM, Dan Grossman wrote: > >> (define (range lo hi) >> (print "hi") >> (if (> lo hi) null (cons lo (range (+ 1 lo) hi)))) >> > ... > > I apologize if this is a known "feature" or a known "bug" -- I do scan >> the release notes briefly when new versions come out, but don't remember >> anything about this. Any pointers? Thanks! >> > > Because I can't do it justice, I will let someone else provide the answer > as to why this does what it does (which is an instance of "the top-level is > hopeless"), but I just want to point out that I showed this example to two > members of the PLT team and asked them to predict how many times "hi" would > be printed. > > They both predicted wrong. > > David > > ____________________ > Racket Users list: > http://lists.racket-lang.org/**users <http://lists.racket-lang.org/users> >
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