Ah, sorry. Robby
On Sat, Jun 21, 2014 at 2:04 AM, Jos Koot <jos.k...@gmail.com> wrote: > > I find the following: > > (write (string->list #<<end > a > a > end > )) > > In DrRacket (#\a #\newline #\a) > In Racket: (#\a #return #\newline #\a #\return) > > Jos > > >> -----Original Message----- >> From: Robby Findler [mailto:ro...@eecs.northwestern.edu] >> Sent: sábado, 21 de junio de 2014 8:29 >> To: Jos Koot >> Cc: Alexander D. Knauth; users >> Subject: Re: [racket] newlines in strings not the same in >> DrRacket and Racket >> >> I think that here strings are parsed in a way to make the >> line-separator difference not matter too. Maybe that works best for >> you? >> >> http://docs.racket-lang.org/reference/reader.html#%28idx._%28g > entag._54._%28lib._scribblings%2Freference%2Freference..scrbl%> 29%29%29 >> >> Robby >> >> On Sat, Jun 21, 2014 at 1:25 AM, Jos Koot <jos.k...@gmail.com> wrote: >> > Thanks Robby, that's clear. >> > I often copy results from the interactions window to the >> definitions window >> > of DrRacket. >> > After reverting my preference file to defaults and >> reselecting my personal >> > preferences, the problem has disappeared. >> > Nevertheless I'll avoid the problem for the future. Four >> options I think: >> > 1: stick to your string-append advice. >> > 2: @ notation of scribble (which I have to try out yet, but >> may well be >> > preferable) >> > 3: replace all newlines in strings by \n (not nice for it >> makes the text >> > less readable) >> > 4: my trick to remove #\return from strings before comparing them. >> > Thanks, Jos >> > >> > >> >> -----Original Message----- >> >> From: Robby Findler [mailto:ro...@eecs.northwestern.edu] >> >> Sent: sábado, 21 de junio de 2014 0:51 >> >> To: Alexander D. Knauth >> >> Cc: Jos Koot; users >> >> Subject: Re: [racket] newlines in strings not the same in >> >> DrRacket and Racket >> >> >> >> The issue is probably that the file is being saved with >> CRLF. When the >> >> file is opened in DrRacket, DrRacket always treats >> newlines like that >> >> as if there were the "\n" character. But when racket reads >> the file it >> >> just puts whatever bytes are in the saved file into the string. >> >> >> >> The best path forward: don't use actual newlines in literals (like >> >> strings). Instead write things like: >> >> >> >> (string-append "first line\n" "second-line\n") >> >> >> >> Or use scribble's @ notation. >> >> >> >> Robby >> >> >> >> >> >> On Fri, Jun 20, 2014 at 5:20 PM, Alexander D. Knauth >> >> <alexan...@knauth.org> wrote: >> >> > Or are you using different editors? Different editors >> >> might use different >> >> > conventions for representing newlines. >> >> > >> >> > When the 32 bit one has the problem, what does it say? >> >> > >> >> > For example when I made the text file with DrRacket or >> >> TextEdit but ran it >> >> > with racket (not DrRacket), it worked, >> >> > but when I made the text file with Microsoft Word, it >> gave me this: >> >> > $ racket newline-3.txt >> >> > (format "~n") = "\n" >> >> > " >> >> > " = "\r" >> >> > Ran 1 check. >> >> > 0 checks passed. >> >> > Actual value >> >> > , the expected value. >> >> > In newline-3.txt at line 7 column 0 >> >> > >> >> > On Jun 20, 2014, at 5:14 PM, Jos Koot <jos.k...@gmail.com> wrote: >> >> > >> >> > Very strange. >> >> > I did the same on my other computer and there it has the >> >> same problem as >> >> > before. >> >> > I use windows 7 on both systems one with 64 bit OS and one >> >> with 32 bit OS. >> >> > The 64 bit version does well, the 32 bit windows 7 system >> >> has the problem. >> >> > May be my preferences? >> >> > Thanks, Jos >> >> > >> >> > -----Original Message----- >> >> > From: Jos Koot [mailto:jos.k...@gmail.com] >> >> > Sent: viernes, 20 de junio de 2014 23:03 >> >> > To: 'Alexander D. Knauth' >> >> > Cc: 'users'; 'Jos Koot' >> >> > Subject: RE: [racket] newlines in strings not the same in >> >> > DrRacket and Racket >> >> > >> >> > Gives me >> >> > >> >> > (format "~n") = "\n" >> >> > " >> >> > " = "\n" >> >> > The only test passed! >> >> > >> >> > both in DrRacket and Racket. >> >> > Very surprising. Can you explain what happens here? >> >> > I don't have a clue. >> >> > Thanks, >> >> > Jos >> >> > >> >> > >> >> > ________________________________ >> >> > >> >> > From: Alexander D. Knauth [mailto:alexan...@knauth.org] >> >> > Sent: viernes, 20 de junio de 2014 22:41 >> >> > To: Jos Koot >> >> > Cc: users >> >> > Subject: Re: [racket] newlines in strings not the same >> >> > in DrRacket and Racket >> >> > >> >> > >> >> > This doesn't exactly solve your problem, but what >> >> > happens (for both cases) when you do this?: >> >> > #lang racket >> >> > (require test-engine/racket-tests) >> >> > (display "(format \"~n\") = ") (format "~n") >> >> > (display "\"") (newline) >> >> > (display "\" = ") " >> >> > " >> >> > (check-expect (format "~n") " >> >> > ") >> >> > (test) >> >> > (void (read-line)) ; wait until the user has read the results. >> >> > >> >> > On Jun 20, 2014, at 3:02 PM, Jos Koot >> >> > <jos.k...@gmail.com> wrote: >> >> > >> >> > >> >> > Running the following in DrRacket goes well. >> >> > >> >> > #lang racket >> >> > (require test-engine/racket-tests) >> >> > (check-expect (format "~n") " >> >> > ") >> >> > (test) >> >> > (read-line) ; wait until the user has read the results. >> >> > >> >> > Displays: The only test passed! >> >> > >> >> > But running the same with Racket tells me the >> >> > test fails. >> >> > I have a solution for this by removing #\return >> >> > from the strings to be >> >> > compared. >> >> > >> >> > Question though: Can I solve this problem in a >> >> > simpler way? >> >> > May be I overlooked something in the docs? >> >> > >> >> > Best wishes, Jos >> >> > >> >> > >> >> > ____________________ >> >> > Racket Users list: >> >> > http://lists.racket-lang.org/users >> >> > >> >> > >> >> > >> >> > >> >> > >> >> > >> >> > >> >> > ____________________ >> >> > Racket Users list: >> >> > http://lists.racket-lang.org/users >> >> > >> > > ____________________ Racket Users list: http://lists.racket-lang.org/users
