Immutable and unique in C#

[Namespace]

On Saturday, 10 November 2012 at 12:51:15 UTC, bearophile wrote:
> Sönke Ludwig:
>
>> It fits perfectly with what's already there, it's proven to be 
>> sound and
>> practical, and IMO it's definitely what should be implemented 
>> in D.
>
> Seems fit to be added to Remus then :-)
>
> Bye,
> bearophile

Gladly, if you would help me to write the necessary structures to 
emulate the behaviour. ;)