[Haskell-cafe] What puts False before True?
stefan at cs.uu.nl
Fri Jun 1 00:27:54 EDT 2007
> If I'm reading the reports correctly, the Ord instance was
> actually added in the Haskell 1.1 standard, by changing the
> definition of Bool from
> data Bool = True | False
> data Bool = True | False deriving (Eq, Ord, Ix, Enum, Text, Binary)
data Bool = False | True
> It seems like we actually get that order because deriving Ord makes
> constructors earlier in the definition compare greater than later
> constructors, and nobody was bothered by that ordering.
It's the other way around:
data T = Less | More deriving (Eq, Ord)
*Main> Less < More
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