As you cannot create definedor operand and don't want to wait for Perl 5.10, emulate it (differs from previos variants, as assigns $self->error to $foo, what you maybe (???) want to do): 
$foo = defined($bar->id) ? $bar->id : $self->error('blah blah');

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In reply to Re: creating operands by Ieronim
in thread creating operands by pvilleSE

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