Initializing objects from proc parameters

[Stefan_Salewski]

I am converting some Ruby code to Nim and got
    
    
    proc initialize(s: Step; prev, nxt, id: int) =
      s.prev = prev
      s.next = next
      s.id = id
      s.radius = 0 # default for incident net
      s.outer = false
    
    
    Run

The first 3 assignments in the proc are a pattern that occur often in my code, 
and so since many years I ask myself if it may be possible to have instead 
something like
    
    
    proc initialize(s: Step; prev, nxt, id: int) =
      s.doTheMagic(prev, next, id)
      s.radius = 0 # default for incident net
      s.outer = false
    
    
    Run

or maybe even better but more fragile
    
    
    proc initialize(s: Step; prev, nxt, id: int) 
{.magicallyInitializeClassFieldsWithMatchingNames.} =
      # s.doTheMagic(prev, next, id)
      s.radius = 0 # default for incident net
      s.outer = false
    
    
    Run