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list.
Also, I would have to treat the lists as 'unordered' so that "1 2 2 3 4" is
considered as being the same as "2 4 3 2 1", and only one of them will be
kept.
thanks,
Tim

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What's a good way to compare a list to a collection of other lists to s=
ee whether it&#39;s already present in the collection?<br>From a collection=
 of lists, I want to keep only one instance of each unique list.<br>Also, I=
 would have to treat the lists as &#39;unordered&#39; so that &quot;1 2 2 3=
 4&quot; is considered as being the same as &quot;2 4 3 2 1&quot;, and only=
 one of them will be kept.<br>

thanks,<br>Tim<br>

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