-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Mon, Dec 07, 2015 at 03:42:28PM +0100, Ludovic Courtès wrote: > taylanbayi...@gmail.com (Taylan Ulrich "Bayırlı/Kammer") skribis: > > > taylanbayi...@gmail.com (Taylan Ulrich "Bayırlı/Kammer") writes: > > > >> l...@gnu.org (Ludovic Courtès) writes: > >> > >>> Not sure what R7 does here. > >> > >> R7RS section 6.13.2 Input, page 58, defines: > >> > >> (read-bytevector! bytevector [port [start [end]]]) > >> > >> Reads the next END - START bytes, or as many as are available before > >> the end of file [...]
[...] > Yes, but only “until the end of BYTEVECTOR has been reached.” All else would lead to... "interesting results", as every C hacker knows ;-) But still the original problem remains: how to get "up to" N octets from a stream without blocking, even if the stream hasn't N octets available yet (the UNIX read() semantics with O_NONBLOCK, more or less) Symetrically, there's the same thing with write(). Now the R7RS comes very close to that, but alas, not quite. Marko's proposal seems extremely tempting, I must say... regards - -- tomás -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iEYEARECAAYFAlZmtpMACgkQBcgs9XrR2kYnMgCfUj8F1pWXdEunzEyXQg3tj3a6 wOUAn2srffROBjnUiRi17RXiLHOe8NK1 =5qrh -----END PGP SIGNATURE-----
