笔记软件在2023/3/29 20:57:08推送该笔记
初始化
constructor(){
_contractCreateTime = block.timestamp;
}
function seconds10CanDo() external{
if(block.timestamp>_contractCreateTime+10 seconds){
student.id = 8000;
}
}
//e.g:after 10 seconds
modifier only(uint time){
require(block.timestamp>_contractCreateTime+time);
_;
}