-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Friday 11 January 2002 15:04, Keith Wansbrough wrote: > but most people seemed to believe that a lazy language shouldn't need > macros or a preprocessor (despite the liberal use of both in GHC, for > example).
I'm hoping I will not have to use any sort of macro preprocessor that has survived from 1965. If you need it for platform compatibility switches I would reckon that you can do it at the file level [+]. It looks much nicer, see tcl/tk sources. I can tell from experience that writing a C++ class with #ifdef 's in the middle of the interface is the worst possible kind of coding. [*] I don't see any other reason why someone would want to use a macro preprocessor except accidental habits. Any sort of configuration which does not prevent compilation (i.e. availability of a library), can be implemented in run time. That is probably better/more extensible design as well. Everything else a macro procesor is used for in low/medium level languages like C can be elegantly defined in a higher level language such as Haskell. Thanks, [+] Though I have no idea how you could do that with a Haskell build system, is there something like a VPATH that haskell compiler recognizes? There might be some problems implementing different files for different platforms approach without such a feature. Maybe you could simply symlink the required files into a source dir in a build system and compile there. Might not be very portable to a certain less-than-UNIX system though. :) [*] I try not to use any CPP except #include's in C++. - -- Eray Ozkural (exa) <[EMAIL PROTECTED]> Comp. Sci. Dept., Bilkent University, Ankara www: http://www.cs.bilkent.edu.tr/~erayo GPG public key fingerprint: 360C 852F 88B0 A745 F31B EA0F 7C07 AE16 874D 539C -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE8Pw7VfAeuFodNU5wRAkSgAJ4lwi+tqeRauZZZpRJXkRl3wPH2pQCdGip7 aGmebPcRSXVTzzedZCXgH6A= =sUuT -----END PGP SIGNATURE----- _______________________________________________ Haskell mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/haskell
