> counting unique elements

What is that supposed to mean?

The elements are by definition unique IFF their count is one!

Cheers Rolf
(addicted to the Perl Programming Language and ☆☆☆☆ :)
Wikisyntax for the Monastery

In reply to Re^4: Out of Memory when generating large matrix by LanX
in thread Out of Memory when generating large matrix by cathyyihao

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