How would autovivification know that the undef in lvalue context it's autovivifying wasn't the original undef? 

$ perl -MYAML::Syck -le '$h{bar}=1;$h{bar}=undef;push @{$h{bar}}, qw/a
+ b c/;print Dump( \%h )'
--- 
bar: 
  - a
  - b
  - c

[download]

The cake is a lie.
The cake is a lie.
The cake is a lie.

In reply to Re^5: multiple values for one key in hash by Fletch
in thread multiple values for one key in hash by sovixi

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