finding items that occur more than once in a list

John Machin sjmachin at
Sat Mar 22 12:48:17 CET 2008

On Mar 22, 9:58 pm, Arnaud Delobelle <arno... at> wrote:
> Lastly, if one deals with a totally ordered set of object but they are
> not hashable (there isn't a good hash function), then Ninereeds' idea
> of sorting first is still useful.

... and if not totally ordered, then ... I'll just stand aside and cue
the timbot :-)

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