2010/8/31 michael rice <nowg...@yahoo.com> > > "Learn You a Haskell ..." says that (->) is a type just like Either. Where > can I find its type definition?
You can't define it *in* Haskell as user code. It is a built-in infix type constructor (Either or Maybe are type constructors too, not just types). In fact, if you want to implement a simple, typed functional language, you'll find it is the only built-in type constructor you have to implement (as the implementor of the language). Also, Show a => a is a type too, but you won't find a definition for 'a' or for '=>'. All those things are defined by the language. Cheers, Thu _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
