Yeah, that does it. Thanks. On Tuesday, December 6, 2016 at 3:33:30 PM UTC-2, Luis Sanjuán wrote: > On Saturday, December 3, 2016 at 12:41:31 PM UTC+1, Fernando Basso wrote: > > I am doing this course: > > > > https://www.edx.org/xseries/how-code-systematic-program-design > > > > It uses the Basic Student Language and they use DrRacket, which is fine. > > Still, I happen to also use other editors, like vim and emacs. With emacs, > > I use racket-mode and I am able to run tests with check-expect and things > > work fine. > > > > Still, I have not been able to figure out how to make the repl print > > numbers with repeating decimal instead of fractions. > > > > If I create a file in DrRacket itself and set the language to Basic Student > > Language, I can check "Details" in the "Choose Language" dialog and choose > > between fractions and repeating decimal. The resulting file then contains > > something like this: > > > > #reader(lib "htdp-beginner-reader.ss" "lang")((modname area-tests) > > (read-case-sensitive #t) (teachpacks ()) (htdp-settings #(#t constructor > > repeating-decimal #f #t none #f () #f))) > > > > My question is: why doesn't it work if I have that line on top of .rkt > > files and run the code from racket-mode (which invokes racket behind the > > scenes and opens the repl) or from the command line with `racket file.rkt`‽ > > > > In short, how can I get repeating decimals when I am not using DrRacket? > > > > Thanks in advance for any help or insights. > > Since your main issue is the final printing representation and you are on > BSL, the easiest way is to coerce the resulting number to inexact (that is > printed as decimal) by calling exact->inexact, which is also available from > BSL. > > Example (from the REPL): > > > (exact->inexact (/ 2 3)) > 0.6666666666666666
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