the-way-to-go_ZH_CN/eBook/examples/chapter_7/slices_forrange2.go

package main

import "fmt"

func main() {
	seasons := []string{"Spring", "Summer", "Autumn", "Winter"}

	for ix, season := range seasons {
		fmt.Printf("Season %d is: %s\n", ix, season)
	}

	var season string
	for _, season = range seasons {
		fmt.Printf("%s\n", season)
	}

	for ix := range seasons {
		fmt.Printf("%d ", ix)
	}
}

/* Output:
Season 0 is: Spring
Season 1 is: Summer
Season 2 is: Autumn
Season 3 is: Winter
Spring
Summer
Autumn
Winter
0 1 2 3
*/