tc078.hs:9:10: warning: [-Wmissing-methods (in -Wdefault)]
    • No explicit implementation for
        either ‘==’ or ‘/=’
    • In the instance declaration for ‘Eq (Bar a)’

tc078.hs:10:10: warning: [-Wmissing-methods (in -Wdefault)]
    • No explicit implementation for
        either ‘compare’ or ‘<=’
    • In the instance declaration for ‘Ord (Bar a)’