# Here's an array...
my @array = ('foo', 'bar', 'baz');

# Set up a reference (pointer) to the array above.
my $array_ref = \@array;

# We can access an item in the array like this.
warn $array[2];

# But we want to access it via the reference (pointer)
# then we need the arrow:
warn $array_ref->[2];