Go-内置函数之append、recover用法

package main


import "fmt"
import "time"

func test() {
        defer func() {
                if err := recover(); err != nil {
                        fmt.Println(err)
                }
        }()

        b := 0
        a := 100 / b
        fmt.Println(a)
        return
}

func main() {
        for {
                test()
                time.Sleep(time.Second)
        }

        var  a []int
        a = append(a,10,20,333)
        a = append(a,a...)
        fmt.Println(a)
}



---输出结果---

E:\Go\project>haha1.exe

runtime error: integer divide by zero

runtime error: integer divide by zero

runtime error: integer divide by zero

runtime error: integer divide by zero

总结：输出实时异常结果，不利于排查详细问题。应打出详细信息输出到日志里。