A module I am creating has a blessed hash ref as is common. One of the hashes is a reference to an array of anonymous hashes created like so: 

sub new {
    my $class = shift;
    my %attrs = @_;
    
    my @products = ({
        'id'            => 0,
        'name'          => 'Test',
        'description'   => 'Some test data',
        'qty'           => 1,
        'price'         => 1000,
    });
    $attrs{'trolley'} = \@products;
    
    return bless \%attrs, $class;
}

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Later on I want to push another anonymous hash onto @products.

What is the best way to do this?
Both of these push lines appear to work identically in testing 

sub add_product {
    my ($self, $product_data) = @_;
    # create $new_product hasfref
    push $self->{'trolley'}, $new_product;
    push @{$self->{'trolley'}}, $new_product;
}

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However, I suspect there is some subtle difference between the two which might trip me up in the future!

Is there a practical difference and is there a 'best' option to use?

In reply to Pushing hash ref onto array ref by Bod

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