go语言之进阶篇error接口的使用

1、error接口的使用

示例：

package main

import "fmt"
import "errors"

func main() {
        //var err1 error = fmt.Errorf("%s", "this is normol err")
        err1 := fmt.Errorf("%s", "this is normal err1")
        fmt.Println("err1 = ", err1)

        err2 := errors.New("this is normal err2")
        fmt.Println("err2 = ", err2)
}

执行结果：

err1 =  this is normal err1
err2 =  this is normal err2