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7394 :: How to create a new ref object from an immutable (non-ref) object?

• tsojtsoj (orginal) [2021-01-17T01:05:24+01:00] view original

  I want to create a new reference object from an immutable (non-reference) object. Something like this:

  
  type Something = object
         a: int
  proc f(s: Something) =
         var x: ref Something = deepCopy(s)
  Run

  This doesn't compile, but I would like something that works like this if the argument s to the deepCopy call would be a ref object.

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• Yardanico (orginal) [2021-01-17T01:10:54+01:00] view original

  I guess you want something like this?

  type Something = object
    a: int
  
  proc f(s: Something) =
    var x = new(Something)
    x[] = s
    echo repr x
  
  f(Something(a: 42))
  Run

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• alexeypetrushin (orginal) [2021-01-17T07:03:11+01:00] view original

  proc to_ref*[T](o: T): ref T = result.new result[] = o

  Run

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