目录type示例isinstance示例issubclass示例综合示例isinstance针对类issubclass总结type type方法有两种重载形式：
How do you make a CLLocationDegrees? It\'s not a float, 开发者_JAVA百科so what is it?According to the CLLocation documentation, CLLocationDegrees is simply a double. So to create one, you could do som
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