Making immutable instances

[bonono at gmail.com]

Mike Meyer wrote:
> And again, *what's the use case*? A number of people have asked why we
> shouldn't allow this, but none of them been able to come up with a use
> case better than "I think doing that is bad style."
>
oh, that is the usual argument anyway. It is nothing but style, most of
the time. Making a style thing into a right/wrong, better/worse
argument is really for time killing, there would never be real answer.