However, the hash itself may be auto-vivified in spite of using exists().   In fact, the hash will be auto-vivified by the use in exists()!   This may be what davido was thinking about.   Check perlref for examples of how the end-point (the hash element) is protected from auto-vivification by the above constructs, by the leading components of the hash expression are not.

In reply to Re: Re: Re: Making a failed hash lookup return something other than undef by shenme
in thread Making a failed hash lookup return something other than undef by jpfarmer

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