Persistent list

[Timon Gehr via Digitalmars-d]

On 11/17/2015 10:54 AM, Marc Schütz wrote:
> On Monday, 16 November 2015 at 17:12:06 UTC, Steven Schveighoffer wrote:
>> ...
>> I think it could be done, because logical const is possible via a
>> global lookup table. Any time you go through a cast, however, this
>> could easily break down.
>
> That's a really good argument: We don't actually introduce new
> semantics, we only want make existing techniques more accessible and
> efficient.

That's only strictly true if access to @mutable members is impure.
One also needs to be careful about 'shared'.