Simon Marlow wrote:
The code in YHC is roughly "if some list is empty then error "No files
found"
else error "Many files found"". If this code were changed to the
equivalent
of "error (if some list is empty then "No files found" else "Many files
found")", would there still be circumstances where the actual output
produced could vary?
Maybe. If GHC knows that error is strict (which it might well do) then you
could be back where you started.
Oops, error isn't strict, never mind.
Cheers,
Simon
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