Comparing StableNames of different type
marlowsd at gmail.com
Fri Aug 24 11:08:03 CEST 2012
On 24/08/2012 07:39, Emil Axelsson wrote:
> Are there any dangers in comparing two StableNames of different type?
> stEq :: StableName a -> StableName b -> Bool
> stEq a b = a == (unsafeCoerce b)
> I could guard the coercion by first comparing the type representations,
> but that would give me a `Typeable` constraint that would spread
> throughout the code.
I think that's probably OK. It should be safe even if the types are
different, but I presume you expect the types to be the same, since
otherwise the comparison would be guaranteed to return False, right?
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