That was quick. Thanks a lot Paolo and Vincent! Jonathan
> On 10 Dec 2015, at 22:11, Vincent St-Amour <[email protected]> > wrote: > > I just merged Paolo's fix. The fix should be in the next release. > > If you want to try it before that, you can either try building from > source, or using a nightly build tomorrow: pre.racket-lang.org > > Vincent > > > > On Thu, 10 Dec 2015 12:44:39 -0600, > Paolo Giarrusso wrote: >> >> On Thursday, December 10, 2015 at 7:15:07 PM UTC+1, Jonathan Brachthäuser >> wrote: >>> In DrRacket 6.2.1 when using the `match` construct as defined in the >>> abstraction teachpack together with posn a strange problem appears. >>> >>> When choosing BSL as language the following code just works as expected: >>> >>> ``` >>> (require 2htdp/abstraction) >>> (match (make-posn 1 2) [(posn x y) (+ x y)]) >>> ``` >>> >>> yields `3`. >>> >>> However when choosing "BSL with list abbreviation" the above code gives: >>> >>> ``` >>> ... (posn x y) ... >>> function call: expected a function after the open parenthesis, but found a >>> part >>> ``` >>> >>> We can work around the error by using `my-posn` instead (defined below) >>> >>> ``` >>> (define-struct my-posn (x y)) >>> ``` >>> >>> Is there any explanation why this happens? Is the abstraction teachpack not >>> designed to work with "BSL with list abbrv" ? >> >> The issue is a missing export in BSL+. >> >> Last time this came up, I submitted a pull request which is still open, so I >> suspect this isn't fixed yet: https://github.com/racket/htdp/pull/16. >> Apparently I only made a pull request and didn't open a thread on this ML, >> which might be part of the problem. >> >> -- >> 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. -- 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.
