例子1

package mainimport (	"fmt")func main() {	f := closer(10)	//fmt.Println(f(1))	//fmt.Println(f(2))	f(1)	f(2)}func closer(x int) func(int) int {	fmt.Printf("%p\n", &x)	return func(y int) int {		fmt.Printf("%p\n", &x)		return x + y	}}

0x118400e80x118400e80x118400e8

 例子2

package mainimport (	"fmt")func main() {	for i := 0; i < 3; i++ {		defer func() {			fmt.Println(i)		}()	}}

333

 例子3

package mainimport (	"fmt")func main() {	var fs = [4]func(){}	for i := 0; i < 4; i++ {		defer fmt.Println("defer i =", i)		defer func() {			fmt.Println("defer closure i=", i)		}()		fs[i] = func() {			fmt.Println("close i = ", i)		}	}	for _, f := range fs {		f()	}}

close i =  4close i =  4close i =  4close i =  4defer closure i= 4defer i = 3defer closure i= 4defer i = 2defer closure i= 4defer i = 1defer closure i= 4defer i = 0