Ultimately, I expect to use defined() to see if an element exists or not

In addion to the other, excellent comments:
To determine if a key exists in a hash use exists. The function defined is used to test for definedness (i.e.not undef).

In reply to Re: How to Check Hashes for Missing Items when Keys can be Values and vice versa by sn1987a
in thread How to Check Hashes for Missing Items when Keys can be Values and vice versa by ozboomer

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