Overload system.default

[charlieH]

Is it possible to do something like this? 
    
    
    type X = object
        x: uint
    proc default*(T: typedesc[X]): X = X(x: 2)
    
    when isMainModule:
      var x: X
      x.x += 1
      echo(x.x) # prints 3 rather than 1
    
    
    Run