2533: Generic functions that take integral arguments should work the same way as their prelude counterparts

Duncan Coutts duncan.coutts at worc.ox.ac.uk
Fri Aug 22 07:40:49 EDT 2008

On Fri, 2008-08-22 at 11:46 +0100, Neil Mitchell wrote:
> Hi
> > The Prelude functions drop, take, and splitAt are unfailing (never
> > call error). This patch changes the Data.List generic versions to
> > behave the same way. At present, they call error on negative
> > arguments.
> I had always just assumed that take and genericTake did the same
> thing, so had never even realised this problem existed. I'd call this
> a bug, that needs fixing.

I'd like to know the rationale for the difference in the first place, or
hear from one of the spec authors that it was just an oversight.


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