[Haskell-cafe] Monoid wants a (++) equivalent

[Martijn van Steenbergen]

Ross Paterson wrote:
> Generalizing (++) will break some Haskell 98 code, e.g.
> 
>   append = (++)
> 
> I think that's a show-stopper.

Is the monomorphism restriction the only situation in which stuff breaks?

Martijn.