array access references and copies

refcopy.go

package main
import "fmt"

type foo struct {
  val int 
}


func main(){
  arr := make([]foo, 5)
  for i:=0; i< len(arr); i++ {
    arr[i] = foo{1}
  }
  
  fmt.Printf("%v\n", arr)

  ref := arr[0]
  ref.val = 2 

  arr[1].val = 3 

  ref2 := &(arr[2])
  ref2.val = 4 
  fmt.Printf("%v\n", arr)
}

//output
//[{1} {1} {1} {1} {1}]
//[{1} {3} {4} {1} {1}]
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