each function

Each.go

package main;

import "fmt"

func Each(arr []int, iterator func(int)) {
  for i := range arr {
    iterator(i)
  }
}

func main() {
  var arr []int = make([]int, 10)
  
  for i := 0; i < len(arr); i++ { arr[i] = i }
  
  Each(arr, func(i int) {
    fmt.Println(i)
  })
}