Re: [racket-users] Writing make-sized-byte-string alternative on CS
Thank you for the rapid response! ~slg ‐‐‐ Original Message ‐‐‐ On Tuesday, September 15, 2020 5:15 PM, Matthew Flatt wrote: > You use `make-bytes` and `memcpy`, instead of writing a new loop. (The > non-copying part of `make-sized-byte-string` is what CS can't support.) > > Matthew > > At Tue, 15 Sep 2020 21:12:22 +, Sage Gerard wrote: > > > The docs for > > [make-sized-byte-string](https://docs.racket-lang.org/foreign/foreign_pointer-f > > uncs.html?q=free#%28def.%28%28quote.~23~25foreign%29._make-sized-byte-string% > > 29%29) indicate that CS does not support this operation. I'm guessing I just > > need to fall back to building a loop using ptr-ref, but is there something > > about CS that would prevent me from doing that too? > > ~slg > > -- > > 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 racket-users+unsubscr...@googlegroups.com. > > To view this discussion on the web visit > > https://groups.google.com/d/msgid/racket-users/P-nFrHLWq2Hs3MxhcsA09NoQtGaw0LfG > > 5WE-nC_IHWGSl3rPhToCquz8spEVDUAqg-LJRYweeGmerH12XTUUFhXBOHgBDAabpQk-2b2gFiQ%3D% > > 40sagegerard.com. > > -- > > 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 racket-users+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/racket-users/20200915151528.252%40sirmail.smtps.cs.utah.edu. -- 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 racket-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/VaJJK7oIA61OCcSOlP_cUnN2A9AemVTtzbPbFw8A_Z0zT7zwzqAg19rTT7NOiCGtTU1OnfLDjXOLlXPxxeoV1-Ikjnm3PBrcjvOgHeXiea8%3D%40sagegerard.com.
Re: [racket-users] Writing make-sized-byte-string alternative on CS
You use `make-bytes` and `memcpy`, instead of writing a new loop. (The non-copying part of `make-sized-byte-string` is what CS can't support.) Matthew At Tue, 15 Sep 2020 21:12:22 +, Sage Gerard wrote: > The docs for > [make-sized-byte-string](https://docs.racket-lang.org/foreign/foreign_pointer-f > uncs.html?q=free#%28def._%28%28quote._~23~25foreign%29._make-sized-byte-string% > 29%29) indicate that CS does not support this operation. I'm guessing I just > need to fall back to building a loop using ptr-ref, but is there something > about CS that would prevent me from doing that too? > > ~slg > > -- > 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 racket-users+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/racket-users/P-nFrHLWq2Hs3MxhcsA09NoQtGaw0LfG > 5WE-nC_IHWGSl3rPhToCquz8spEVDUAqg-LJRYweeGmerH12XTUUFhXBOHgBDAabpQk-2b2gFiQ%3D% > 40sagegerard.com. -- 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 racket-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/20200915151528.252%40sirmail.smtps.cs.utah.edu.
[racket-users] Writing make-sized-byte-string alternative on CS
The docs for [make-sized-byte-string](https://docs.racket-lang.org/foreign/foreign_pointer-funcs.html?q=free#%28def._%28%28quote._~23~25foreign%29._make-sized-byte-string%29%29) indicate that CS does not support this operation. I'm guessing I just need to fall back to building a loop using ptr-ref, but is there something about CS that would prevent me from doing that too? ~slg -- 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 racket-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/P-nFrHLWq2Hs3MxhcsA09NoQtGaw0LfG5WE-nC_IHWGSl3rPhToCquz8spEVDUAqg-LJRYweeGmerH12XTUUFhXBOHgBDAabpQk-2b2gFiQ%3D%40sagegerard.com.
