I remember reading that in the camel book, but I didn't know if it still worked that way. I'll keep each in mind for if I'm ever dealing with a hash that pushes my memory limits, although that seems like a rare situation -- a hash that does fit into memory, but adding an array of its keys would cross the line.

Aaron B.
My Woefully Neglected Blog, where I occasionally mention Perl.

In reply to Re^5: Finding the size of a nested hash in a HoH by aaron_baugher
in thread Finding the size of a nested hash in a HoH by Jeri

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