Factorial in Nimrod

Example for versions Nimrod 0.8.8

This example uses iterative factorial calculation. Note that you can’t just omit int64 in variable definition, since its type will be deduced as integer, and it will overflow on 13!. 

var f: int64 = 1
for i in countup(0,16):
  echo i, "! = ", f
  f = f * (i + 1)