Okay, so is my original example: 
next unless exists $user_by_uid{$uid}->{$host};

[download]

more like the following: 

$href = defined $user_by_uid{$uid} ? $user_by_uid{$uid} : {}; #Fake au
+toviv
next unless exists $href->{$host};

[download]

Or would it be more like the following, using your example code? 

next unless my_fake_exists $user_by_uid{$uid}, $host;

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In other words, since there is no short-circuit evaluation to avoid the -> in my original example does that mean the autoviv occurs before anything is passed in to 'exists'?

Thanks very much for taking time to respond and hope you had a Happy New Year!!

In reply to Re^8: Why does exists cause autovivication? by Argel
in thread Why does exists cause autovivication? by Argel

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