How to Create a Text File List of RGB Values in Nim (aka Nimrod)

rgb.nim

proc main() =

  var fp = open("true_colour_nimrod.txt", fmWrite)
  
  var r = 255
  var g = 255
  var b = 255
  
  for r in countdown(255, 0):
    for g in countdown(255, 0):
      for b in countdown(255, 0):
        fp.write(r)
        fp.write(",")
        fp.write(g)
        fp.write(",")
        fp.write(b)
        fp.write("\n")
        
   finally: fp.close()
   
 main()

Nim (aka Nimrod) version of the same example in C http://mikequentelsoftware.blogspot.ca/2010/11/how-to-create-text-file-of-rgb-values.html