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1291 :: Opt out of system.$

• andrea (orginal) [2015-06-04T15:43:42+02:00] view original

  I have a type which is defined as follows:

  type
    OrderType* = enum rowMajor*, colMajor*
    Matrix64*[M, N: static[int]] = object
      order: OrderType
      data: ref array[M * N, float64]
  Run

  I have defined my own $ proc for this type. Apparently this creates a conflict with a default system.$(x: T) which I guess is defined for values of object type, so I get Error: ambiguous call; both system.$(x: T) and linalg.$(m: Matrix64) match for: (Matrix64[4, 4]) when I try to print a matrix.

  Is there a way to opt out the default $ and tell Nim to use my custom $ instead?

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• def (orginal) [2015-06-04T16:25:53+02:00] view original

  Works for me:

  type
    OrderType* = enum rowMajor, colMajor
    Matrix64*[M, N: static[int]] = object
      order: OrderType
      data: ref array[M * N, float64]
  
  proc `$`(m: Matrix64): string = "foo"
  
  var x: Matrix64[2, 3]
  echo x
  Run

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• andrea (orginal) [2015-06-04T16:29:54+02:00] view original

  I am not sure why it is not working for me... Anyway, I have just found that making my $ more specific, it works

  proc `$`[M, N: static[int]](m: Matrix64[M, N]): string = "foo"
  Run

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• Varriount (orginal) [2015-06-04T16:32:50+02:00] view original

  @andrea What version of the compiler are you using?

  @def What about you?

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