in reply to Delete for array:

does splice'ing an array of hashes free memory? may be of interest, regarding the merits of splice vs slice
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Re^2: Delete for array:
by TJPride (Pilgrim) on Nov 28, 2011 at 05:21 UTC
    Well, it's obviously not going to be efficient to remove one item at a time from a huge array via splice. But I would think that in those situations you'd use a different method.
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In Section Cool Uses for Perl