next LASTLOG unless exists $user_by_uid{$uid}->{$host};

How is perl to know that you don't want to dereference $user_by_uid{$uid} when you dereference it explicitly? Where should exists start dereferencing, and how do you rewrite the evaluation order of expressions to make it work its way through the dereferencing chain without breaking the ability of exists to work on other expressions?

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

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