golang中range在slice和map遍历中的注意事项

package main
import (
 "fmt"
)
func main() {
 slice := []int{0, 1, 2, 3}
 myMap := make(map[int]*int)
 for _,v :=range slice{
 if v==1 {
  v=100
 }
 }
 for k,v :=range slice{
 fmt.Println("k:",k,"v:",v)
 }
}

for k,v :=range slice{
 if v==1 {
  slice[k]=100
 }
 }

 package main
  import (
   "fmt"
  )
  func main() {
   s :=[]int{1,2,3,4}
   m :=make(map[int]*int)
   for k,v:=range s{
   m[k]=&v
   }
   for key, value := range m {
   fmt.Printf("map[%v]=%v\n", key, *value)
   }
   fmt.Println(m)
  }

package main
import (
 "fmt"
)
func main() {
 s :=[]int{1,2,3,4}
 m :=make(map[int]*int)
 for k,v:=range s{
 n:=v
 m[k]= &n
 }
 for key, value := range m {
 fmt.Printf("map[%v]=%v\n", key, *value)
 }
 fmt.Println(m)
}