Autovivification only happens when required

Be careful with such statements: 

$ perl -le 'my $a; defined $a->{b}{c}; print ref $a'
HASH

[download]

Autovivification is not required here, but still the hash access autovivifies $a to { b => {} }.

Perl 6 - second systems done right

In reply to Re^2: When DOESN'T "Use of uninitialized value" show up? by moritz
in thread When DOESN'T "Use of uninitialized value" show up? by Tim McDaniel

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