I am reading in two sets of data (name and social security number for two lists of people) and comparing them. One data set is new and one is old. I need to create two lists from comparing the two data sets. 1) Who is on the new list, but not on the old list and 2) Who is on the old list, but not on the new list.

Currently, I am loading them both into hashes and want to compare them. Unfortunately, I can't find any help on comparing (difference) of two hashes, only for arrays. Am I going about this the wrong way?

Any suggestions are greatly appreciated.

BTW, I'm a total Perl noob, so be gentle. ;)

In reply to Need advice on hashes and methods by tom2112

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