type ValidationError struct{
Field string
Value interface{}}func(e *ValidationError)Error()string{return fmt.Sprintf("验证错误:字段 %s 值 %v 不合法", e.Field, e.Value)}funcvalidateAge(age int)error{if age <0|| age >150{return&ValidationError{
Field:"Age",
Value: age,}}returnnil}funcmain(){
err :=validateAge(-5)if err !=nil{if ve, ok := err.(*ValidationError); ok {
fmt.Printf("特定错误处理:%s\n", ve.Error())}}}
代码如下:
在这里插入代码片#include<stdio.h>
#include<stdlib.h>
#include<windows.h>int main() {int i,j;int x 5;int y 10;int height 20;int velocity_x 1;int velocity_y 1;int left 0;int right 20;int top 0;int bottom 10;while(1){…
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