[Haskell-begin] data declarations
Brandon S. Allbery KF8NH
allbery at ece.cmu.edu
Tue Jul 22 23:26:22 EDT 2008
On 2008 Jul 22, at 23:01, Roger Myers wrote:
> Not sure if I'm on the right track here, so as a beginner I thought
> I'd ask on
> this list.
> I want to declare a type 'All' that consists of the of the types
> Tbool, Tstring, Tarray' but I would also like to make a relationship
> Tinteger and Tbool are also the type 'Simple' and that 'Tstring' and
> are 'Composite' and that Mixed is then either Simpletype or Composite.
> So I can then write a function that takes a type of All and produces
> a list of
Any particular reason that All can't be represented by Mixed? That
would be my first cut at it (assuming I didn't need advanced type
hackery for some reason).
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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