For Loops

For-Loops are the only loops which can be used in Go. There are no for-reach and not even while-loops in Go. At first, you might find this weird. Yet, for-loops are used for all cases.

func main() {
  for i := 0; i <= 3; i++ {
    fmt.Println(i) // 0, 1, 2, 3
  }
}

Using an already existing variable:

i := 0
for i := i; i <= 3; i++ {
   fmt.Println(i)
}

This way, while-loops as we know them from other programming languages are replaced.