2.5 Go错误处理

defer

import "fmt"

func testDefer(){
    defer fmt.Println(1)
    defer fmt.Println(2)
    fmt.Println(3)
    panic("0")
}

func main()  {
    testDefer()
}

输出，defer是栈结构，先进后出

3
2
1
panic: 0