code / tomo-koans

   1 # Functions
   2 
   3 func main()
   4 
   5     # Functions can be declared in any order.
   6     # The main() function is the first function to run,
   7     # but it can call any other functions defined in
   8     # the same file.
   9 
  10     # Here, we're calling a function defined below.
  11     # Fix up the function so it passes thes tests:
  12     assert add(5, 10) == 15
  13     assert add(2, 4) == 6
  14 
  15     # Functions can also be called with keyword arguments:
  16     assert add(x=4, y=12) == 16
  17 
  18 # Functions are defined using `func` and must specify
  19 # the types of their arguments and return values like this:
  20 func add(x:Int, y:Int -> Int)
  21 
  22     # Fix this so it returns a sensible result:
  23     return ???