On 2009 Mar 13, at 4:25, Wolfgang Jeltsch wrote:
Am Freitag, 13. März 2009 04:53 schrieb Brandon S. Allbery KF8NH:On 2009 Mar 12, at 22:54, Mark Spezzano wrote:I was wondering what the best way to implement Natural number would be. Is there a package which already does this?type-level on Hackage.I think, the original poster wanted value-level naturals, not type- levelnaturals.
My (possibly incorrect) understanding was that value-level naturals required runtime range checks, whereas type-level naturals allowed you to validate them at compile time. I thought I'd mentioned that in my response, contrasting type-level naturals with value-level newtypes and other implementations.
-- brandon s. allbery [solaris,freebsd,perl,pugs,haskell] [email protected] system administrator [openafs,heimdal,too many hats] [email protected] electrical and computer engineering, carnegie mellon university KF8NH
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