Or maybe not. Undef is too often a valid value or an expected return value. A warning for the read access to a nonexistent hash key might make sense. And would point to the line of the possible typo. Warning about the use of an undef, even if called "uninitialized value", is mostly pointless. It forces you to write more code and more code means more bugs and it often points to a wrong place in the code.

If you are afraid of mistyping the hash key, lock the hash via Hash::Util.

Jenda
Enoch was right!
Enjoy the last years of Rome.

In reply to Re^3: Best practices, revisited by Jenda
in thread Best practices, revisited by ELISHEVA

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