[Haskell-cafe] What unsafeInterleaveIO is unsafe
ketil at malde.org
Thu Mar 19 03:20:34 EDT 2009
Jonathan Cast <jonathanccast at fastmail.fm> writes:
>> Couldn't you just substitute "catch exceptions" with "unsafePerformIO"
>> here, and make the same argument?
> This puzzled me, until I realized you meant `unsafeInterleaveIO'.
Aargh, yes of course! Sorry about that.
> Assuming you mean unsafeInterleaveIO, not quite. GHC's scheduler is
> fair, so you are guaranteed after
> forkIO $ a
> that a's side effects will happen eventually.
Ah, I hadn't thought of that.
If I haven't seen further, it is by standing in the footprints of giants
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