Go 폐쇄

Go 폐쇄

package main
import "fmt"
// outer function
func greet() func() string {
  // variable defined outside the inner function
  name := "John"
    // return a nested anonymous function
  return func() string {
    name = "Hi " + name
    return name
  }
}
func main() {
  // call the outer function
  message := greet()
  // call the inner function
  fmt.Println(message())

}