-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Andrew Coppin wrote:
OTOH... how the heck do you write an operating system in a language that doesn't even support I/O? :-S
Back when I was first learning programming, with C, I had that exact same question: how the heck can your program DO anything, when the language consists of a bunch of functions that are executed that can only modify meaningless variables your program defines? (C standard defines modifications to volatile variables as side-effects, actually.) It's because your environment knows how to call into the kernel, the kernel knows how to make you computer do things - and that usually involves a bit of assembly, because the C language doesn't define non-program-logic for the compiler to translate. Source-language extensions to C allow inline assembly (and much more), so I'm sure something appropriate could be done for Haskell if that was judged as the best approach. Isaac -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGduIWHgcxvIWYTTURAoRQAKC6vOw01VfwaPJavhcL5YV+lKlHagCdHUjB guyrL0QcQUTfHG8PW91Wm+Q= =2Xeu -----END PGP SIGNATURE-----