Const sucks

[Walter Bright]

Robert Fraser wrote:
> That worries me (not that case in particular, but general constness +
> classes). My coding style tends to use a lot of invariant objects
> (for thread safety reasons), so I get the feeling that the inability
> to *easily* express a mutable reference to a constant class will bite
> me like a ferret.

It worries me in the abstract, but I've not been able to find a real 
case where it matters.