Loops can be nested. When you use break inside a nested loop, it will jump out of the current loop; continue will continue the current loop.

If we want to break out of both loops from inside the inner loop, we can use a label.

A label in Go is simply a way of giving a name to a particular location in the code, so that we can refer to it later. The syntax for a label is just the name of the label followed by a colon.

1outer:
2    for x := 0; x < 10; x++ {
3        for y := 0; y < 10; y++ {
4            fmt.Println(x, y)
5            if y == 5 {
6                break outer
7            }
8        }
9    }

If we wanted to continue the outer loop instead of exiting it, we could have written continue outer.

The goto keyword will simply jump directly to the specified label.

References

• John Arundel, For the Love of Go