Re: controlled type in generic package?

[Florian Weimer <fw@deneb.enyo.de>]

John English <je@bton.ac.uk> writes:

> Not only that, but by deriving something from Controlled, you're
> giving up your ability to derive from anything else. If I want to
> derive a new type from an existing (non-Controlled) type and add
> a destructor (Finalize), I have to perform lots of acrobatics and
> commit all sorts of atrocities on my code to do it!

It's just an ordinary mixin construction.  Of course, there some
syntactical overhead involved, but it's straightforward.