[Haskell-cafe] Thoughts about redesigning "Num" type class

Jerzy Karczmarczuk jerzy.karczmarczuk at unicaen.fr
Sat Sep 12 15:59:14 UTC 2015

Le 12/09/2015 14:39, Olaf Klinke a écrit :
> semirings might be a useful typeclass to have. Another example: Non-negative reals with infinity, the values that a measure can take.
Could you mention, please, a system whose measures are for sure positive 
reals, infinity included?
Perhaps your definition of "measure"should be precised...

Jerzy Karczmarczuk

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