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5255 :: Front page example

• Nimster (orginal) [2019-10-01T06:36:34+02:00] view original

  This code on the front page as written returns the EVEN numbers from the function oddElements. Either i should be set to 0, or the passed array needs a 0 in the front in order to return ODD elements.

  Thanks to Nim's 'iterator' and 'yield' constructs,

  iterators are as easy to write as ordinary

  functions. They are compiled to inline loops.

  iterator oddElementsIdx, T: T =

  var i = 1

  while i < a.len:

  yield a[i] i += 2

  for x in oddElements([10, 20, 30, 40, 50, 60]):

  echo x

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• miran (orginal) [2019-10-01T07:50:39+02:00] view original

  Every number in [10, 20, 30, 40, 50, 60] is even. That's on purpose.

  This iterator returns elements at odd positions, i.e. index 1, 3, 5.

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• Stefan_Salewski (orginal) [2019-10-01T08:14:32+02:00] view original

  Also see https://github.com/nim-lang/website/issues/162

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• sschwarzer (orginal) [2019-10-01T10:22:25+02:00] view original

  I agree with Nimster and Stefan_Salewski. The proc does something quite different from what its name (to me and probably most people) suggests. Admittedly, the use of the proc makes you look a second time at it and see what the proc does, but still I wouldn't count this example as a good one. :-)

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• lucian (orginal) [2019-10-01T10:55:13+02:00] view original

  odd positions, i.e. index 1, 3, 5

  Some people consider that odd positions are in fact at index 0, 2, 4. Is there a definite guide on the correct terminology?

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• miran (orginal) [2019-10-01T11:21:39+02:00] view original

  There is now a different iterator example on the website. Hopefully it won't confuse people anymore.

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