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
