On 5/1/13 at 5:43 PM, [email protected] (Bill Frantz) wrote:

On 5/1/13 at 1:37 PM, [email protected] (Tab Atkins Jr.) wrote:

Ah, I'm not proposing that we augment the base Future class with
cancellation properties.  I explicitly used the term "subtype" in the
quoted bit above.  *Some* of Ron's suggestions were to augment the
base Future class, but not all of them, and several other people
pushed back on that.

I think that covers the issue.

Cheers - Bill

Upon further reflection, I think the point about premature standardization stands.

Also, a pure inheritance model -- which is implied by subclassing -- may be the wrong model. If one wants to include POLA in one's programming style, one will probably want to separate the authority to access the resulting value from the authority to abort the computation.

Cheers - Bill

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