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Re^5: Numerically generate the perl sequence 1, 11, 111, ....

by JavaFan (Canon)
on Oct 14, 2008 at 23:46 UTC ( #717118=note: print w/ replies, xml ) Need Help??


in reply to Re^4: Numerically generate the perl sequence 1, 11, 111, ....
in thread Generate the perl sequence 1, 11, 111, ....

Well, yes, I was joking. But to address your problems:

  • It being updated isn't a problem. The Unicode database gets updated as well. Just decide at some point in time before you make a release which version of the OEIS you're going to include. That's what we've been doing with the Unicode database as well. The version included in 5.10 is later than the one in 5.8.x, and the one that comes with blead perl is a later version than what's in 5.10. And perl itself gets continuously updated as well. But that doesn't stop many vendors from including perl in their distros.
  • As for your second point, many entries in the OEIS have generating formula; sometimes recursive, sometimes closed.
Personally, I don't think the OEIS should be included just to make ".. *" smarter - but for other reasons than you point out.


Comment on Re^5: Numerically generate the perl sequence 1, 11, 111, ....
Re^6: Numerically generate the perl sequence 1, 11, 111, ....
by TimToady (Parson) on Oct 15, 2008 at 00:24 UTC

      I personally believe that it's by far too verbose, losing the original attempt at conciseness, but the latter could be recovered by means of of suitable (pseudo? unofficial?r) protocol/scheme (or whatever it's really called like...) so I think that the Perl 6 syntax should really be:

      1,-3,-8...oeis://A046970
      How's that for self-documenting code?

      --
      If you can't understand the incipit, then please check the IPB Campaign.

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