[Haskell-cafe] Pattern matching does not work like this?
felipe.lessa at gmail.com
Wed Jul 15 08:32:14 EDT 2009
On Wed, Jul 15, 2009 at 08:09:37AM -0400, Andrew Wagner wrote:
> Err, technically, aren't functions and constructors mutually exclusive? So
> if something is a function, it's, by definition, not a constructor?
I guess what Eugene Kirpichov meant was that not being a function
(and being a constructor) isn't sufficient, it must also be a
constructor of the correct type, e.g.
f Nothing = ...
f (x:xs) = ...
isn't correct, however it pattern matches on constructors only.
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