Thank you David.
But AIUI (i.e. practically not at all) Dask is about parallel computing,
which is not the same thing as deferred evaluation, though doubtless
they overlap. Again AIUI, parallel computing is mainly useful when you
have multiple cores or multiple computers.
Can anyone give examples (in Python pseudo-code perhaps) showing how
*deferred evaluation* would be useful for a concrete task? (Solving an
equation. Drawing a graph. Analysing a document. Manufacturing a
widget. Planning a journey. Firing a missile. Anything! You name it.)
Best wishes
Rob Cliffe
On 08/12/2021 22:40, David Mertz, Ph.D. wrote:
On Wed, Dec 8, 2021, 2:58 PM Rob Cliffe via Python-ideas
On 08/12/2021 19:27, Paul Moore wrote:
> The reason deferred objects keep coming up is because they *do*
have a much more compelling benefit - they help in a much broader
range of cases.
Can anyone provide some realistic use cases? I've read the whole
thread and I can only recall at most one, viz. the default value
is expensive to compute and may not be needed.
https://docs.dask.org/en/stable/delayed.html
This library is widely used, extremely powerful, and expressive.
Basically, a built-in capability would have every win of Dask Delayed,
but decrease the impedance mismatch (which isn't terrible as-is) and
avoid the need for external tooling.
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