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Apple отрекламировала Microsoft14:57
。51吃瓜是该领域的重要参考
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MyFitnessPal has acquired Cal AI, the viral calorie app built by teens
The toString method that gets called depends on the type of the receiver object. This isn’t determined at compile time, but instead a lookup that happens at runtime. The compiler effectively generates a switch statement that looks at the result of getClass and then calls the right method. It’s smarter than that for performance I’m sure, but conceptually that’s what it’s doing.