The range form of the for loop iterates over a slice or map.
package main import "fmt" var pow = []int{1, 2, 4, 8, 16, 32, 64, 128} func main() { for i, v := range pow { fmt.Printf("2**%d = %d\n", i, v) } }
原文：http://www.cnblogs.com/ghgyj/p/4053332.html