Re: [Scheme-reports] Some comments after reading the r7rs public draft

[Emmanuel Medernach <emmanuel.medernach@x>]

On Thu, Jun 7, 2012 at 7:43 AM, Alaric Snell-Pym <alaric@x> wrote:

> No, the idea is for `delay` to fork a thread and `force` to join it (unless

> the result is already cached).

A better implementation approach would probably be to have a pool of
low-priority "idle threads" that, when scheduled, pick pending promises
from a (priority?) queue and force them.

I don't think it is a good idea to mix laziness, which is about delaying computation, with futures which are explicitly about parallelism. 
Eventually evaluating a promise in parallel invalidates the whole laziness idea: it prevents one to implement infinite streams with finite memory for instance.

Cheers,
--
Emmanuel
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