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Re: Keeping order with Union


Hi,

look in the "Future Examples" of the Mathematica Online Help for Union[]
!

UnsortedUnion[x_] := Module[{f}, f[y_] := (f[y] = Sequence[]; y); f /@
x]

Regards
  Jens

Dave Snead wrote:
> 
> I'd like a function that throws out duplicate entries in a list and keeps
> the
> original list order.  (when it sees 2 equal entries it throws out the one
> that is later in the list).   I'd use Union, but it sometimes changes the
> order of the elements in the list.  What's the tersest way to do this?
> Thanks in advance,
> Dave Snead


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