>perl -MData::Dumper -e 'print Dumper($foo[42])'
$VAR1 = undef;

>perl -MData::Dumper -e 'my $foo="bla"; print Dumper($foo[42])'
$VAR1 = undef;

>perl -MData::Dumper -Mstrict -e 'print Dumper($foo[42])'
Global symbol "@foo" requires explicit package name (did you forget to declare "my @foo"?) at -e line 1.
Execution of -e aborted due to compilation errors.

>perl -MData::Dumper -Mstrict -e 'my $foo="bla"; print Dumper($foo[42])'
Global symbol "@foo" requires explicit package name (did you forget to declare "my @foo"?) at -e line 1.
Execution of -e aborted due to compilation errors.

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