It asks is_none() to update the bitmap, then serializes with unwrap_or_self() if the value exists.
在米兰—科尔蒂纳冬奥会赛场周边，体育用品店货架上摆满了各类冰雪装备。拿起一根为滑雪运动新手准备的滑雪杖，“Made in China”几个英文单词引人注意。这根运动杖的“出生地”是浙江省宁波市宁海县，每年超过1500万根运动杖从这里出发，销往世界各地。
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My hope is that there remains a primordial spark, a glimpse of genius, to rediscover, to reconnect to - to serve not annual trends or constant phonification, but the needs of the user to use the computer as a tool to get something done.