valid continue
for 循环
if(!valid):
continue; //跳出当次循环,后面不执行了;并开始下一次循环
https://betterprogramming.pub/refactoring-guard-clauses-2ceeaa1a9da
for 循环
if(!valid):
continue; //跳出当次循环,后面不执行了;并开始下一次循环
https://betterprogramming.pub/refactoring-guard-clauses-2ceeaa1a9da