I was told to use map, but have no idea what it is.
map is a built-in Perl function. It's documentation can be found online and at your command prompt: 
perldoc -f map

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I think I'll be using perl monks quite often
Great, but please read Writeup Formatting Tips

In reply to Re^3: How to add array in Hash by toolic
in thread How to add array in Hash by bennierounder

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