Natural is not positive

[oyster]

here is the code on the [https://nim-lang.org](https://nim-lang.org)/

however, 
    
    
     = range 0..9223372036854775807(int)
    
    Run

how do I know? Just assign a float to age. then nim refuse to compile.

so it is a very bad example

  1. the comment is wrong. btw, is there any builtin type which is true 
positive integer or float number?
  2. no known man has a age of 9223372036854775807 years old!


    
    
    import strformat
    
    type
      Person = object
        name: string
        age: Natural # ensures the age is positive
    
    
    Run