[Haskell-beginners] Haskell Preprocessor?

Brandon S. Allbery KF8NH allbery at ece.cmu.edu
Wed Sep 24 22:03:35 EDT 2008

On 2008 Sep 24, at 21:57, Mike Sullivan wrote:
> What is the easiest and/or best way to define global "constants" in  
> Haskell (avoiding any side effects, of course). The functionality  
> I'm thinking of is similar to the use of global "const" variables or  
> #defines in C code.

ghc at least *should* be smart enough to take

     a = 5

and optimize all uses of "a" away via inlining, giving you a constant  

brandon s. allbery [solaris,freebsd,perl,pugs,haskell] allbery at kf8nh.com
system administrator [openafs,heimdal,too many hats] allbery at ece.cmu.edu
electrical and computer engineering, carnegie mellon university    KF8NH

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