strictness of interpreted haskell implementations

[Neil Mitchell]

Hi

>>       data S = S { a :: Int, b :: ! Int }
>>
>>       Main> a (S { a = 0, b = 1 })
>>       0
>>       Main> a (S { a = 0, b = undefined })
>>       0
>>
>> Ho hum.  Is this a "known difference"?

I've submitted a bug: http://hackage.haskell.org/trac/hugs/ticket/92

> As an ex teaching assistant my recommendation is "Use ghci!".

I helped to teach using WinHugs, which was quite nice. Auto reload
cuts out one very frequent source of problems.

Thanks

Neil