# Pastebin znMpj81v
sub renderOLD(Invoice $inv --> Str) is export {
    use FStrings;
    qq:to/RENDER/;
    Invoice: $inv.id()
    Date:    $inv.date()
    Client:  $inv.client()

    {f('Description' -f 30, 'Hours' +f 6, 'Rate' +f 8, 'Subtotal' +f 10)}
    { "-" x 58 }
    $inv.items.map({
        f(.description -f 30, .hours +f 6.1, .rate +f 8.2, .subtotal +f 10.2)
    }).join("\n")
    { "-" x 58 }
    {f('Subtotal'  +f 46, $inv.subtotal +f 10.2)},
    {f($inv.label      +f 46, $inv.tax      +f 10.2)},
    {f('Total'     +f 46, $inv.total    +f 10.2)};
    RENDER
}

sub renderOLD2(Invoice $inv --> Str) is export {
    use FStrings;
    qq:to/RENDER/;
    Invoice: $inv.id()
    Date:    $inv.date()
    Client:  $inv.client()

    &sprintf("%-30s %6s %8s %10s", "Description", "Hours", "Rate", "Subtotal")
    { "-" x 58 }
    $inv.items.map({
        sprintf("%-30s %6.1f %8.2f %10.2f",
            .description, .hours, .rate, .subtotal
                )
    }).join("\n")
    { "-" x 58 }
    &sprintf("%46s %10.2f", "Subtotal",  $inv.subtotal)
    &sprintf("%46s %10.2f", $inv.label,  $inv.tax)
    &sprintf("%46s %10.2f", "Total",     $inv.total)
    RENDER
}

sub render(Invoice $inv --> Str) is export {
    use FStrings;
    do given $inv {
        "Invoice: {.id}",
        "Date:    {.date}",
        "Client:  {.client}",
        "",
        f( 'Description' -f 30, 'Hours' +f 6, 'Rate' +f 8, 'Subtotal' +f 10 ),
        "-" x 58,
        |.items.map({ f( .description -f 30, .hours +f 6.1, .rate +f 8.2, .subtotal +f 10.2) }),
        "-" x 58,
        f('Subtotal'  +f 46, .subtotal +f 10.2),
        f(.label      +f 46, .tax      +f 10.2),
        f( 'Total'    +f 46, .total    +f 10.2);
    } .join("\n");
}