In the first version you are manipulating $_, but you haven't set $_ to any value. you seem to thing that it will be set to each of your hash keys in turn, there's no code to make tha happen. In the second version, you're manipulating the first element of @_, which _is_ set to each key in turn. Therefore it works! hth, davorg...

In reply to RE: Passing values in a hash to a subroutine: by Anonymous Monk
in thread Passing values in a hash to a subroutine: by Elihu

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