code / tomo-koans

   1 # Variables
   2 
   3 func main()
   4 
   5     # Variable declarations use `:=` and do not
   6     # require you to specify a type explicitly:
   7     x := 123
   8 
   9     # To assign a new value, use `=`
  10     x = 999
  11 
  12     # You can also use update assignments like `+=`
  13     x += 1
  14 
  15     assert x == 1000
  16 
  17     # Variables are strongly typed, so you can't
  18     # assign different types to the same variable:
  19     x = "hello" # <-- This will error, comment it out or fix it
  20 
  21     # Declare a variable called `y` and give it the
  22     # value "okay"
  23 
  24     ???
  25 
  26     assert y == "okay"