> On 27 Feb 2015, at 17:53, Henrik Johansen <[email protected]> 
> wrote:
> 
> 
> 
> Would something like 
>       slots: {#x . #y . #area -> (Cache: #calculateArea)) }
> 
> Meaning :area is a Slot that holds a cached value, calculated when accessed 
> (by calling calculateArea), and nilled whenever slots accessed by it's 
> calculation method takes a new value.

yes, that should be quite easy to build in combination with MetaLinks… 

        Marcus


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