Why does this work 
$foo ||= [1,2,3]

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($foo gets set to 1,2,3 if and only if $foo is false)

But this doesn't 

@bar ||= (1,2,3)

Can't modify array dereference in logical or assignment (||=) at (eval
+ 27)[/usr/lib/perl5/5.8.8/perl5db.pl:628] line 2, at EOF

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In reply to ||= oddity by throop

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