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3452 :: slice from openarray?

• animosity (orginal) [2018-01-02T22:05:39+01:00] view original

  I'm trying to get a slice from an open array and there seems to be a type mismatch error. Is there any way around this?

  
  proc xxx(r: openarray[int]) =
    processRow(r[0..9])  <- type mismatch
    ...
  Run

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• dom96 (orginal) [2018-01-06T13:07:56+01:00] view original

  bump

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• Stefan_Salewski (orginal) [2018-01-06T13:26:08+01:00] view original

  Please provide minimal, but complete examples when possible. This works fine:

  proc processRow(r: openarray[int]) =
    for i in r: echo i
  
  proc xxx(r: openarray[int]) =
    processRow(r[0..9])
  
  xxx([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12])
  
  Run

  Well, works fine with recent nim compiler:

  
  nim -v
  Nim Compiler Version 0.17.3 [Linux: amd64]
  Copyright (c) 2006-2017 by Andreas Rumpf
  
  git hash: b7e69e7cbbf6139316841bcc7c596e93ac78d994
  active boot switches: -d:release
  Run

  Pressing the run button in forum gives:

  
  Hint: used config file '/nim/config/nim.cfg' [Conf]
  Hint: system [Processing]
  Hint: in [Processing]
  in.nim(5, 15) Error: type mismatch: got (openarray[int], Slice[system.int])
  but expected one of:
  proc `[]`(s: string; x: Slice[int]): string
  proc `[]`[T](s: seq[T]; x: Slice[int]): seq[T]
  proc `[]`[I: Ordinal; T](a: T; i: I): T
  proc `[]`[Idx, T](a: array[Idx, T]; x: Slice[Idx]): seq[T]
  proc `[]`[Idx, T](a: array[Idx, T]; x: Slice[int]): seq[T]
  Run

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