I don't like your ref-based test (it will give both false positives and false negatives). I'd just be sure to 'use strict' and do 'if $hash && $hash->{1}' instead. Perhaps 'if ref($hash) && $hash->{1}' would also be okay.

Note that you can also use Data::Diver to avoid autovivification.

I'd still really like to have a 'no autovivify' pragma... (:

- tye        

In reply to Re^2: Testing a key creates a hash (ref--) by tye
in thread Why does testing a key create a hash? by johnnywang

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