Sometimes you want to handle errors from a group of operations in one place rather than propagating them up. try-catch catches errors from ? propagation inside the try block:
print(x); // hello，推荐阅读新收录的资料获取更多信息
烏克蘭部署將武裝機器人投入戰場，详情可参考新收录的资料
Фото: Антон Новодережкин / ТАСС
Bandwidth: My early code used a shocking amount of bandwidth