On Sun, Jan 05, 2020 at 08:33:58PM +0100, Prof. Dr. Johannes Grabmeier privat
wrote:
> Hi all,
>
> Finite is Missing StepThrough! Any objection against adding a default
> step through:
No deep objection. But AFAICS StepThrough is:
- almost unused
- hard to use correctly
- hard to implement correctly for infinite domains build
on top of finite ones
To be more precise, the only actiual use that I found is to
"emulate" random. But it is well-known that sequentialy
stepping trough elements can lead to very bad runtime
compared to using random elements.
AFAICS implementation of StepTrough in SparseUnivariatePolynomial
is still incorrect: it will produce duplicates when 0 is not
the first element in the sequence.
So, if you have good use for StepTrough, then we can add it to
Finite. But otherwise I would rather look towards removal of
StepTrough.
--
Waldek Hebisch
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