Possible way to achieve lazy loading with const objects

[Steven Schveighoffer]

On Wed, 28 Sep 2011 20:11:51 -0400, Peter Alexander  
<peter.alexander.au at gmail.com> wrote:

> On 26/09/11 8:02 PM, Steven Schveighoffer wrote:
>> I think a better avenue would be to implement some sort of strong-pure
>> memoization system. Then all you have to do is make an immutable pure
>> member, and the compiler will take care of the rest for you.
>
> How can the compiler possibly figure out the best way to cache things  
> for you?
>
> Or have I misunderstood?

It would likely be some sort of tag.  Like:

@memoize pure int reallyTimeConsumingMethod() immutable

-Steve