golang 簡單閉包

package main

import (
	"fmt"
)

func main() {
	var i int =9
	f:=func() (func()) {
		var i int = 10
		return func() {
			// 閉包函數 
			fmt.Println(i)
		}
	}()

	f()
	fmt.Println(i)
}