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2703 :: Overloading indexing operator for string type

• gergelyk (orginal) [2017-01-07T21:01:09+01:00] view original

  While overloading len proc with string parameter works perfectly fine:

  proc len(x: string): int =
    return 123
  
  var s: string = "abcd"
  echo s.len # 123
  Run

  the same doesn't seem to take effect in case of indexing operator:

  proc `[]`(x: string, i:int): char =
    return 'X'
  
  var s: string = "abcd"
  var index: int = 2
  echo s[index] # expeced 'X', got 'c'
  Run

  is it expected?

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• Araq (orginal) [2017-01-08T02:00:07+01:00] view original

  Yeah, pretty much. Overloaded indexers are looked for if the builtin indexers fail, but it is a special case in the language.

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• gergelyk (orginal) [2017-01-08T02:34:15+01:00] view original

  I see. Thank you for explanations.

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