Constant relationships between non-constant objects

[Chris Nicholson-Sauls via Digitalmars-d]

On Thursday, 19 June 2014 at 08:50:55 UTC, Chris Nicholson-Sauls
wrote:
>
>     invariant
>     {
>         assert(someB !is null);
>     }
>

Obviously that should be assert(_b !is null)...... I need more
caffeine before posting.