for 인덱스, 값 := range arr {

package main
import "fmt"
func main() {
       var arr [10]int
       for i:=0 ; i< len(arr) ; i++ {
              arr[i] = i*2
       }
       for index, value := range arr {
              fmt.Printf("index ->[%d] value ->[%2d] \n", index, value)
       }
       for index, _  := range arr {
              fmt.Printf("index ->[%d] value -> ...  \n", index)
       }
       for _, value := range arr {
              fmt.Printf("index ->... value ->[%2d]  \n", value)
       }
}

/home/kim/language/go/bin/go run /home/kim/PycharmProjects/untitled1/stu27_2.go
index ->[0] value ->[ 0]
index ->[1] value ->[ 2]
index ->[2] value ->[ 4]
index ->[3] value ->[ 6]
index ->[4] value ->[ 8]
index ->[5] value ->[10]
index ->[6] value ->[12]
index ->[7] value ->[14]
index ->[8] value ->[16]
index ->[9] value ->[18]
index ->[0] value -> ... 
index ->[1] value -> ... 
index ->[2] value -> ... 
index ->[3] value -> ... 
index ->[4] value -> ... 
index ->[5] value -> ... 
index ->[6] value -> ... 
index ->[7] value -> ... 
index ->[8] value -> ... 
index ->[9] value -> ... 
index ->... value ->[ 0] 
index ->... value ->[ 2] 
index ->... value ->[ 4] 
index ->... value ->[ 6] 
index ->... value ->[ 8] 
index ->... value ->[10] 
index ->... value ->[12] 
index ->... value ->[14] 
index ->... value ->[16] 
index ->... value ->[18]