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Top Forums Web Development Intersection and union of array by hash Post 302500467 by radoulov on Monday 28th of February 2011 04:36:48 PM
Old 02-28-2011
Quote:
Originally Posted by yifangt
Thanks!
I got it now, but it seems to me if there is duplicate items in either of the arrays, it won't work, right?
Correct. That's why I said "assuming each array contains only unique values".

The union will work anyway (it's a union, not union all).
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