example_lambda.go

package main

import (
    "fmt"
    "strconv"
)

func main() {
   xs := []int{2, 3, 4}

   var cmds []func()
   for _, x := range xs {
      cmds = append(cmds, func() { fmt.Println(x) })

      fmt.Println("append: " + strconv.Itoa(x))
      for _, cmd := range cmds {
        fmt.Print("func pointer: ")
        fmt.Print(cmd)
        fmt.Print(", func eval: ")
        cmd()
      }

   }
}

output

[koduki]$ go run example_lambda.go
append: 2
func pointer: 0x4012e0, func eval: 2
append: 3
func pointer: 0x4012e0, func eval: 3
func pointer: 0x4012e0, func eval: 3
append: 4
func pointer: 0x4012e0, func eval: 4
func pointer: 0x4012e0, func eval: 4
func pointer: 0x4012e0, func eval: 4