kirby urner schrieb:
Yes thank you I completely agree. A stash of sieves, plus data mine
this very archive for our earlier work on this topic.
My only suggestion is you include a generator version e.g.:
At first this seems an attractive idea, but in my opinion the idea of
sieves is fairly antagonistic
to that of generators. A sieve is used to eliminate from a given set
elements that have
not some desired property, while generators (ideally) create objects,
one at atime, with
that desired property. Drastically: you cannot sieve at first all even
numbers from an infinite set or
sequence. For educational purposes I'd prefer examples that display a
single concept in
a small and simple way. :-* A prime number generater based on some
different algorithm of
course may be interesting and useful.
To continue work in this area one (or at least me) has to have some
criteria to judge the solutions.
Clearly it was advantageous if there was some consensus about these
criteria in the community.
There should be some criteria concerning
(a) the choice of problems and themes,
e.g. to prefer small problems that expose a single idea - or
rather not ... etc.,
as well as some
(b) code related criteria, like clarity, conciseness, efficiency, beauty
(!) etc., ranked according to
their priorities.
Once I had the following idea: there are so many renowned pythonistas in
the developers
community, many of them also interested to promote Python in the
educational area (see for
instance the protagonists in Jeffrey Elkners "Introducing Python"). How
about to ask them
to make a personal donation to the educators and learners: a piece of
code, 10 to 12 lines
at most, that they individually consider to show most convincingly the
power or the beauty
of programming with Python - or the fun they have with it. Young people
like role models ;-)
Regrettably I didn't persue that idea further. What do you think of it.
Ok, the days of the
early pioneers are over, but perhaps it's still worth a try?
Regards,
Gregor
Using Python 3:
g = Primes()
next(g)
-1
next(g)
....
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