17 Feb
2010
17 Feb
'10
11:46 a.m.
The easiest solution is simply to define
unionAll = nub . mergeAll where -- specialized definition of nub nub = map head . groupBy (==)
Talking about the easiest solution, I guess this is a quite easy way of defining unionAll as well: http://gist.github.com/306782 I, of course, do not claim that it is more efficient or better. But I don't think it'd be rubbish :) -- Ozgur Akgun