萝卜快跑四季度全球无人驾驶出行服务次数达 340 万，同比增长超 200%；累计出行服务次数超 2000 万，覆盖全球 26 城市，全无人驾驶里程超 1.9 亿公里。
platform.Foundation.NSData.create(，更多细节参见爱思助手下载最新版本
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Part of the explanation for why so few users will need to verify their age is that Discord already uses an internal "age determination" system that looks at "how long your account has existed, whether you have a payment method on file, what types of servers you're in, and general patterns of account activity."
We can even go ahead and write a quick time-travel function like the one below to replay any execution trace locally, complete with built-in support for detecting time paradoxes!