22 Aug
2008
22 Aug
'08
3:49 p.m.
On Fri, 22 Aug 2008, 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.
Maybe the bug is in 'drop', 'take' and 'splitAt' and it was intended to fix it in 'generic' variants. Is there a good reason why to ignore negative number arguments? It may hide bugs.