枚举和位移详解编程语言

package main 
 
import ( 
    "fmt" 
) 
 
const ( 
    B float64 = 1 << (iota * 10) 
    KB 
    MB 
    GB 
) 
 
func main() { 
    fmt.Println(B) 
    fmt.Println(KB) 
    fmt.Println(MB) 
    fmt.Println(GB) 
}